TW304983B - - Google Patents

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Publication number
TW304983B
TW304983B TW084113251A TW84113251A TW304983B TW 304983 B TW304983 B TW 304983B TW 084113251 A TW084113251 A TW 084113251A TW 84113251 A TW84113251 A TW 84113251A TW 304983 B TW304983 B TW 304983B
Authority
TW
Taiwan
Prior art keywords
heating
oxidizing
gas
furnace
temperature
Prior art date
Application number
TW084113251A
Other languages
Chinese (zh)
Original Assignee
Kawasaki Steel Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP6300044A external-priority patent/JP2991941B2/en
Priority claimed from JP30004594A external-priority patent/JP3394612B2/en
Priority claimed from JP16620795A external-priority patent/JPH0920919A/en
Application filed by Kawasaki Steel Co filed Critical Kawasaki Steel Co
Application granted granted Critical
Publication of TW304983B publication Critical patent/TW304983B/zh

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27FURNACES; KILNS; OVENS; RETORTS
    • F27DDETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D7/00Forming, maintaining, or circulating atmospheres in heating chambers
    • F27D7/02Supplying steam, vapour, gases, or liquids
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27FURNACES; KILNS; OVENS; RETORTS
    • F27BFURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B3/00Hearth-type furnaces, e.g. of reverberatory type; Tank furnaces
    • F27B3/10Details, accessories, or equipment peculiar to hearth-type furnaces
    • F27B3/26Arrangements of heat-exchange apparatus
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22DCASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/10Supplying or treating molten metal
    • B22D11/11Treating the molten metal
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22DCASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D41/00Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
    • B22D41/005Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like with heating or cooling means
    • B22D41/01Heating means
    • B22D41/015Heating means with external heating, i.e. the heat source not being a part of the ladle
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D1/00General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/74Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D1/00General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/74Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material
    • C21D1/767Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material with forced gas circulation; Reheating thereof
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27FURNACES; KILNS; OVENS; RETORTS
    • F27BFURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B3/00Hearth-type furnaces, e.g. of reverberatory type; Tank furnaces
    • F27B3/10Details, accessories, or equipment peculiar to hearth-type furnaces
    • F27B3/20Arrangements of heating devices
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27FURNACES; KILNS; OVENS; RETORTS
    • F27BFURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B3/00Hearth-type furnaces, e.g. of reverberatory type; Tank furnaces
    • F27B3/10Details, accessories, or equipment peculiar to hearth-type furnaces
    • F27B3/26Arrangements of heat-exchange apparatus
    • F27B3/263Regenerators
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27FURNACES; KILNS; OVENS; RETORTS
    • F27DDETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D7/00Forming, maintaining, or circulating atmospheres in heating chambers
    • F27D7/06Forming or maintaining special atmospheres or vacuum within heating chambers
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D1/00General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/74Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material
    • C21D1/76Adjusting the composition of the atmosphere
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27FURNACES; KILNS; OVENS; RETORTS
    • F27DDETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D7/00Forming, maintaining, or circulating atmospheres in heating chambers
    • F27D7/06Forming or maintaining special atmospheres or vacuum within heating chambers
    • F27D2007/063Special atmospheres, e.g. high pressure atmospheres

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Furnace Details (AREA)

Description

304983 A7 B7 經濟部中央橾準局員工消費合作社印製 五、發明説曰/ ( 1 ) 1 1 C 技 術 領 域 ) 1 1 本 發 明 係 關 於 不 氧 化 予 以 加 熱 之 方 法 及 裝 置 尤 其 是 1 | 在 澆 斗 9 餵槽 等 製 鋼 攀 連 績 鏞 造 領 域 中 9 各 種 爐 及 金 屬 ( 1 I 含 非 鐵 金 屬 ) 材 料 之 加 熱 等 加 熱 • 熱 處 理 領 域 中 9 各 種 爐 請 先 閲 1 1 I 中 使 用 有 效 的 不 氧 化 性 氣 體 之 不 氧 化 予 以 加 熱 技 術 者 Ο 讀 背 1 1 之 1 注 意 1 C 背 景 技 術 ) 項 1 I 再 習 知 在 加 熱 爐 中 以 不 氧 化 狀 態 加 熱 鋼 材 等 金 靥 材料 之 f - 窝 本 裝 方 法 有 ( 1 ) 輻 射 管 加 熱 法 ( 曰 本 鐵 Λκη 鋼 協 會編 最 近 的 頁 1 I 實 用 燃 m /ίτιι 技 術 > ( 1 9 8 3 ) 9 Ρ 3 1 ) : ( 2 ) 直 火 還 1 I 原 加 法 ( 第 8 8 次 西 山 記 念 技 術 講 座 9 ( 1 9 8 3 ) 9 Ρ 1 1 I 7 5 ) ; ( 3 ) 二 靥 氛 圍 tjttk 燃 燒 /513 法 ( 曰 本 鋼 管 技 法 9 Ν 0 * 1 訂 I 1 2 0 ( 1 9 8 8 ) » Ρ 2 4 ) 等 〇 1 1 ( 1 ) 之 方 法 係 將 配 設 於 加 熱 爐 內 之 輻 射 管 內 9 藉 燃 1 1 燒 器 燃 爐 /VU 而 予 以 加 熱 9 利 用 從 該 管 外 表 面 所 放 射 之 熱 來加 1 熱 鋼 材 之 方 法 0 因 此 9 由 於 與 ΛΙΓΗ 鋼 材 接 觸 之 爐 內 氛 圍 可 白 由 Λ 1 設 定 9 故 可 容 易 地 使 爐 內 氛 圍 成 爲 不 氧 化 狀 態 0 - 卞 I ( 2 ) 之 方 法 係 將 燃 燒 器 火 焰 中 一+.- 9 形 成 於 外 焰 部 份 之 1 1 I 還 原 焰 9 與 鋼 材 直 接 衝 突 9 而 在 還 原 氛 圍 下声 熱 之 方 法 0 1 1 ( 3 ) %::· · 之 方 法 係 將 鋼 材 包 園 於 .不 完 全 燃 燒則 之 不 氧 1 1 化 氛 圍 9 同 時 > 在 其 不 氧 化 氛 圍 外 側 部 份 之 未 燃 氣 體 區 域 1 1 9 予 以 二 次 燃 燒 r7U 9 藉 二 層 氛 園 調 整 來 加 熱 之 方 法 0 1 1 又 9 以 上 係 關 於 鋼 材 9 而 有 關 A 1 9 C U 等 非 鐵 金 屬 1 I 之 加 熱 9 亦 可 採 用 上 述 各 方 法 0 1 1 本紙張尺度適用中國國家標準(CNS ) A4規格(210X 297公釐) A7 B7 ^04983 五、發明説明(2 ) 然而,上述習知金屬材料之不氧化加熱技術,分別有 下述所述之各種問題。 (1 )輻射管加熱 此方法就使含有燃燒所生成之只2〇或燃燒時剩餘〇2 _ ......, .. . · 等之氧化性燃燒器氣內氛圍完全隔離之點爲非 旦是,由於①爐過在1 2 0 0 1以上之高溫時, 並無可耐此高溫之有效管,②因在管內之狹窄空間燃燒, 故燃燒器~之燃麗容量(爐之加熱能力)有其界限。基於此 ,暫且不論熱處理爐,在爐_過¥過1 2.1_0 0 °C之鋼材輥軋 用加熱爐習知技術就沒有使用過。 (2 )直火還原加熱 此方法係在鋼材之近傍,形成還原氛園爲必要,但由 於①鋼材的表面溫度(9 0 0 °C以下),燃燒條件(負載 ,空氣比,燃燒器容量)等作業上的限制,②在鋼材表面 〜燃燒器間之距離等,有設備上的限制,③由於只能使用 經濟部中央標準局負工消費合作社印裝 具有燃料之燃燒熱的一部份,故熱效率不良,等等理由, 、 … s304983 A7 B7 Printed by the Employees ’Consumer Cooperative of the Central Department of Economics of the Ministry of Economic Affairs V. Invention Statement / (1) 1 1 C Technical Field) 1 1 The present invention relates to a method and device for heating without oxidation, especially 1 | 9 Feeding troughs and other steel making achievements in the field of noodle making 9 Heating of various furnaces and metals (1 I including non-ferrous metals) materials, etc. • Heat treatment in the field of 9 various furnaces please read 1 1 I Use effective non-oxidizing If the gas is not oxidized and the heating technology is applied Ο Read the back 1 1 of 1 Note 1 C Background Art) Item 1 I Know the f-housing method of heating materials such as steel and other materials in a heating furnace in a non-oxidized state (( 1) Radiant tube heating method (Japan Iron Λκη Steel Association recent page 1 I practical combustion m / ίτιι technology > (1 9 8 3) 9 Ρ 3 1) (2) Straight fire and 1 I original addition (the 8th and 8th Xishan Memorial Technical Lecture 9 (1 9 8 3) 9 Ρ 1 1 I 7 5); (3) Erji atmosphere tjttk combustion / 513 method (Japanese steel pipe Technique 9 Ν 0 * 1 Order I 1 2 0 (1 9 8 8) »Ρ 2 4) etc. 〇1 1 (1) The method is to equip the radiant tube in the heating furnace 9 by burning 1 1 burner Burning furnace / VU and heating 9 Method of adding 1 hot steel material using the heat radiated from the outer surface of the tube 0 Therefore 9 Since the atmosphere in the furnace in contact with the ΛΙΓΗ steel material can be set freely by Λ 1 9, the furnace can be easily made The internal atmosphere becomes non-oxidized state 0-Bian I (2) The method is to form a + .- 9 in the flame of the burner in the outer flame part 1 1 I The reducing flame 9 directly conflicts with the steel 9 and sounds in a reducing atmosphere The method of heat 0 1 1 (3)% :: · The method is to wrap the steel in. If it is not completely burned, it will not be oxygen. 1 1 Atmosphere 9 At the same time> In The unburned gas area outside the non-oxidizing atmosphere 1 1 9 is subjected to secondary combustion r7U 9 The method of heating by two-layer atmosphere adjustment 0 1 1 and 9 The above is about steel 9 and non-ferrous metals such as A 1 9 CU 1 I heating 9 The above methods can also be used 0 1 1 The paper size is applicable to the Chinese National Standard (CNS) A4 specification (210X 297 mm) A7 B7 ^ 04983 5. Invention description (2) However, the above-mentioned conventional metal materials The non-oxidizing heating technology has various problems as described below. (1) The heating of the radiant tube makes the point of complete isolation of the atmosphere in the oxidizing burner containing only 2〇 generated by combustion or 〇2 _ remaining during combustion ... The reason is that because ①the furnace has a high temperature above 1 2 0 01, there is no effective tube that can withstand this high temperature. ②Because it burns in a narrow space in the tube, the burner capacity Heating capacity) has its limits. Based on this, for the time being, regardless of the heat treatment furnace, the conventional technology of heating furnace for steel rolling in furnace _ 过 ¥ 过 1 2.1_0 0 ° C has not been used. (2) Direct fire reduction heating This method is necessary near the steel to form a reducing atmosphere, but due to ① the surface temperature of the steel (below 900 ° C), the combustion conditions (load, air ratio, burner capacity) Operational restrictions, ②Distance between the surface of the steel and the burner, etc., there are restrictions on the equipment, ③Since only a part of the combustion heat of fuel printed by the Consumer Cooperative of the Central Bureau of Standards of the Ministry of Economy can be used, Therefore, the thermal efficiency is poor, etc.,… s

·* ' — . -· 、 . .......- . I 無法使用於鋼材之輥軋用加熱爐(熱軋,厚板及條鋼等之 加熱爐)。 " (3 )二層氛圍燃燒 此方法由於,①爲形成二層氛圍,由於對鱸內之燃燒 器配置有限制(例如,預燃燒器及側燃燒器之併用有困難 本紙張尺度適用中國國家橾準(CNS > A4规格(210 X297公釐) 經濟部中央橾準局負工消費合作社印裝 A7 __B7_ 五、發明説明(3 ) ),故在加熱大型鋼材之情形,會有加熱溫度均勻性之問 題,②由於加熱能力/爐容稹與習知燃燒器比較爲小,故 爐會變大型,③在燃燒負載變動時,不氧化氛圍容易散去 •屮私,·,.ί . Nt., ' * ,對負載變動大的爐則難以適用,等的理由,對熱軋,厚 板ϊϋϋ大型鏑材之輥軋用加熱爐並不適用。 又,如上述(2 )或(3 )之方法,藉燃燒獲得不氧 化氛園之方法,因爲爐溫度燃燒條件(例如要在鋼材溫度 > 1 2 0 0 °C時獏得不氧化氛圍,有必要使燃燒氣體之組 . 議圓 | | r, M| „^....一. _.....^ v 1. ‘ . ... . . « 一- - ...—— -一 ...... 成成爲 CO/^COz〉〗.1 及 Η2/Η2〇>1. 2,以 煉焦爐(coke oven)氣體爲燃料之場合,則必須以空氣 比H . 5H)被限制,作業上有諸多限制,要使鋼材 表面近傍成爲完全不氧化之氛圍,而且要使其不氧化氛圍 __, ^^upu:· IJ JX Jl.- IU 1111- ·|υ·||ι. . ......... ·,»、、一*,、!、-_*^·’, 安定且持績有所困難,並無法充分防止氧化。 接著,詳細說明有關連績鑄造領域中,爲爐之一種的 餵槽之加熱背景技術。 餵槽本身因不具發熱體,故在使用之際,爲確保可澆 ______________________一- «·一· 注(pouring)溫度,有必要另外以加熱裝置加熱。又, r r * 使用多台餵槽一面交換一面連績鑄造之情形,例如變更鋼 種類時,與待機中之餵槽交換,而現在使用中的則使其待 室再使用爲止,對其再使用餵槽,有必要加熱至相同之 可澆注溫度。而在任意之場合,習知之餵槽一般係以設於 »· ..... ................................... ..., 餵槽之預熱外蓋的氣體燃燒器作爲加熱裝置使用,以進行 預熱。具體而言,係在其氣體燃燒器,输送例如在煤焦氣 體之燃料氣體混入理論必要量之1 1 〇〜1 2 0%之空氣 本紙張尺度逋用中國國家標準(CNS > A4規格(210X297公釐) --------->''d------訂------^.Λ (請先閱讀背面之注意rf再填寫本頁) A7 __B7 五、發明説明(4 ) ,並在餵槽內燃燒,預先加熱餵槽內面爲1 2 0 0〜 1 3>〇 0°c。然而在此情形,因在燃燒氣體中混入過剩氧 氣,故在連續再使用先預熱之餵槽時,先前使用(前加料 )'時之殘餘鋼·殘渣在次一加料時預熱之際被氧化,而產 生FeO (此稱爲Fed拾取(pick up)現象)。此時 ,該產生之F e 0與鋼中成份之A 1反應,產生 A 1 2〇3,而在鋼中以夾雜物之形式存在,其艏果在下游 .1. Ι·ΜΙ 11····^^,»,». ,^,. . v; . ,. - 製程中,會產生起因於A 1 2〇3之面泡(Hege· blister-ing )等之品質缺陷。 爲謀求防止習知此等F e 0拾取技術之確立,而有各 種提案。例如日本專利特開平4 — 2 2 5 6 7號公報,掲 示一種餵槽預熱方法,其在再使用連績餺造用餵槽時,使 _ V-. ., —^ 供給預熱用氣體燃燒器2¾¾¾,爲相對於供給氣體置之 •. · .............. -·:·.·. ^ ____ , ______ ..........- 理論必要量之7 0〜1 0 0%,藉以使餵槽內之氛圍氧氣 ..... . . . Μν ... . ..... '· 濃度比習知低,以抑制殘餘鋼之氧化者。 經濟部中央樣準局負工消費合作社印製 又,在日本專利特開平2 — 3 7 9 4 9號公報,隨著 餵槽內之預熱完成,在停止燃料之送給時,同時以惰性氣 體之A r氣體趕出燃燒器內之剩餘燃料,而在預熱外蓋內 使2¾¾,同時藉氣體置換專用A r配管輸送置換用A r 氣體來進行置換,使餵槽內的燃燒氣體在短時間以A r氣 .............. I. 體置換,而抑制殘餘鋼氧化之餵槽內氣體置換技術。 然而,上述日本特開平2 — 3 7 9 4 9號公報,日本 特開平4 一 2 2 5 6 7號公報所揭示者,均爲在使用餵槽 之際爲確保澆注可能溫度,將與空氣混合之燃料氣體在餵 本紙張尺度適用中國國家標準(CNS ) A4規格(210X297公釐) 3〇4983 at B7 五、發明説明(5 ) 槽內部燃燒,使內壁預熱至1 2 0 0〜1 3 0 0 °C之習知 方法爲基本前提。因此,在該前提下,前述日本特開平2 _ 3 7 9 4 9號公報之技術,尤其是使用再使用餵槽場合 之預熱時中殘餘鋼氧化問題予以極力抑制,故在預熱完成 後刻意使惰性氣體吹入餵槽內,以燃燒氣體及殘存氧氣沖 洗(purge)置換成不氧化氛圍之方法的確,藉惰性氣體 予以强制地沖洗,可改善燃燒氣體及氧氣之殘存,並使預 熱後氣體置換完成爲止之時間,或多或少予以縮短。但是 卻無法防止加熱中過剩氧氣所致殘渣之氧化,又,因氣體 沖洗會使餵槽內壁溫度降低,而有產生熱損失之問題存在 0 相對於此,後者日本特開平4 一 2 2 5 6 7號公報之 技術,藉由使預熱氣體燃燒器之空氣量成爲理論必要量以 下,可不必進行惰性氣體沖洗而抑制殘餘鋼之氧化,故前 者的問題並不會產生。但是爲完全防止氧化,有必要使燃 燒器之理論空氣量在5 0 %以下,會產生因燃燒時氧氣不 定所產生之不完全燃燒的問題,使得加熱成本變得非常高 經濟部中央標準局貝工消费合作社印製 Ο 再者,在未燃氣體之處置上,會有講求防變革C0中 fc» ... 毒等之安全對策爲必要之問題產生。 ____--- ~-· - —-· _ ♦ 本發明係關於金靥材料之加熱·熱處理領域或製鋼· 連續鑄造領域中,在不氧化氛圍下加熱爲必要之各種爐之 加熱,並著眼於上述習知技術所具有之問題而完成者,其 第一目的爲提供一種藉由連績進料高溫不氧化性氣體而加 本紙張尺度適用中國國家揉準(CNS > A4規格(210X297公釐) A7 _B7_____ 五、發明説明(6 ) 熱,可完全防止被加熱物之氧化,且熱之有效利用亦爲可 能,又無不完全燃燒或中毒之虞的不氧化予以加熱方法及 裝置。 又,本發明目的係在於個別克服上述各習知技術所具 有之各種問題之技術確立,其第二目的爲提供一種,藉由 防止乃至抑制加熱時之氧化,來謀求銹皮損耗(scale loss)之降低,提高產率,且經由氧化抑制使除垢(desc-aTing)處理爲容易,因而可反映於成本之不氧化予以加 熱方法及裝置。 • 又,本發明之第三目的爲提供一種產生高溫不氧化性 氣體之有效裝置,尤其是藉由與爐內燃燒氣體之熱交換, 可得到預熱至加熱中之鋼材溫度以上或與爐過大略相等之 過度的不氧化性氣體,在形成鋼材加熱氛圍下,可實現低 成本之不氧化加熱作業者。 〔發明之揭示〕 達成上述目的之本發明申請專利範圍第1〜1 1項記 載之發明係關於不氧化予以加熱之方法。 本發明之不氧化予以加熱之方法,係以髙溫之不氧化 性氣體加熱不氧化氛圍爲必要之爐內時,使多台蓄熱式加 熱器交互變換,並在規定溫度重覆進行不氧化性氣體之加 熱操作,如此一來,可連嫌產生高溫之不氧化性氣體(f — 一—............. 1 請專利範圍第1項)。藉此.,可排除些微氧化性氣體之有 在,在不中斷高溫不氧化性氣體下供給於爐內,而完全防 本紙張尺度逍用中國國家橾準(CNS ) Α4規格(210Χ297公釐) 請 先 閲 讀 背 之 注 意 事— 項 再 * 喜裝 訂 經濟部中央標準局貝工消費合作社印製 五、發明説明(7 ) 止被加熱物之氧化。 、'茬1¾ ,使供給於爐內之高溫不氧化性氣體一部份再循 環而再使用於爐內之加熱(申請專利範圍第2項),可謀 求熱之有效利用。 又,將供給爐內之高溫不氧化性氣體,由透過蓄熱式 ) 加熱器進行與爐內燃燒氣體之熱交換來產生(申請專利範 ίΙΓϊ項),可齊求習知浪費地排出之爐內燃燒氣體之廢 熱的稹極利用,實現更低成本之不氧化加熱作業。 本發明的不氧化予以加熱方法,適用於不氧化氛圍爲 必要之爐的餵槽之加熱(申請專利範圍第4項)。藉此, 習知,特別是在再使用內壁上產生殘餘鏘之餵槽之際所進 行之使用預熱燃燒器之因餵槽內燃燒氣體所產生之預熱可 被省去,可完全防止餵槽內殘餘鋼之氧化,即防止F e 0 …鉍 .· ...... 拾取,進而防止製品鋼品質缺陷的產生。 經濟部中央搮準局貞工消費合作社印裝 ^κ此時,以餵槽外部之加熱裝置,使k至少加熱至 8 5 0 °C以上之不氧化性氣體,保熱該餵槽內,再供下回 使用(申請專利範圍第5項),可比習知更大幅延長餵槽 再使用時之待機可能時間,而增加連續數。 又,本發明之不氧化予以加熱方法,可適用於不氧化 氛圍爲必要之爐的鋼材加熱爐(申請專利範圍第6項)藉 此,可省卻燃燒條件等限制多的,充分氧化防止爲困難之 輻射管法,直下還原加熱法,二層氛圍燃燒法等習知之加 ...... ......................... ............ . ....... 、’· 熱爐不氧化予以加熱法,使加熱爐內鋼材面氛圍安定保持 於完全不氧化氛圍,可實現銹皮損耗之降低,進而提高製 本紙張尺度適用中國國家搮準(CNS > A4規格(210X297公釐) 經濟部中央標準局負工消費合作社印製 A7 B7 五、發明説明(8 ) 品產率。 在此情形,於加熱爐內之被加熱鋼材周圍,供給預熱 至加熱中鋼材溫度以上或與爐過大略相等溫度之高溫不氧 化性氣體(申請專利範圍第7項),可防止爐過或鋼材溫 度之降低,並提高加熱效率。 又,在此情形,鋼材表面溫度在超過7 0 OeC之加熱 帶或均熱帶中,以包圍被加熱鋼材之方式,使高溫不氧化 氣磨吹至該鋼材近傍,或藉由該等吹製士與爐內氧化性 氣mrm广等任意之方法(申請專利範圍第8項),從加 熱爐內之氧化性氣體氛園遮斷被加熱鋼材,可促進鋼材銹 皮損耗降低所致產率的提高。 又,本發明之不氧化予以加熱方法,適用於不氧化氛 困爲必要之爐的退火爐(申請專利範圍第9項)。藉此, 替代習知輻射管燃燒器所致之間接加熱,而進行高溫氣體 噴流所產生之對流傳熱加熱,可飛躍地提高例如板條( strip)等被加熱材料之板溫度控制性。 在本發明之不氧化予以加熱方法中,係使用作爲不氧 化性氣體之惰性氣體或混合可燃界限以下之微童還原性氣 體於惰性氣體之混合氣體,使其導入爐內,藉以使爐內氛 圍成爲不氧化或還原氛圍。在此情形,惰性氣體係N2, Αγ單獨或混合使用,前述還原性氣體係H2,CO單獨 \ 或混合使用。(申請專利範圍第1 0,1 1項)。使爐內 氛圍成爲可燃界限以下之還原氛圍,藉以使氧化防止作用 更完全,另一方面氧化物之還原亦爲可能,同時可排除因 本紙張尺度適用中國國家標準(CNS ) A4規格(2丨OX297公釐) 4',裝— (請先閲讀背面之注*-事項再填寫本頁) 訂 11 304983 A7 B7 經濟部中央標準局貝工消費合作社印製 五、發明説明(9 ) 爐內氣體之漏出等所致爆炸之可能性。 SI Γ ,,ΙΜΜ - 本發明申請專利範圍第1 2〜1 6項所記載之發明, 係關於不氧化予以加熱裝置。 本發明之不氧化予以加熱裝置,係對不氧化氛圍爲必 要之爐內所供給之不氧化性氣體予以加熱之蓄熱式不氧化 加熱裝置,具有蓄熱髖及其加熱裝置,同時具備:至少以 .. .u…….' ................ 2個爲一組之熱交換器;及連接該熱交換器及未加熱不氧 ^ ...... , - 化性氣體供給管線之變換閥,使前述熱交換器之任一個爲 加熱蓄熱體之蓄熱系統:另一個爲加熱不氧化性氣體而送 JE之送風系統,使兩系統以前述變換閥變換,並藉熱玄換 _ .... ..... ·" ' ........ ... I) ..................... -' 便性氣體連續地產生(申請專利範圍第1 2項 可使熱交換中之髙溫不氧化性氣體確資地連績 並供給於爐內,而防止被加熱物之氧化。 〜 一..................... ' ' ''''~-~¥*藏¥$式之不氧化加熱裝置,併設氣體循環用風扇 ,並設置加熱氣體之循環通路,使其吸引側連接至爐內, 同時,使排出側連接前述未加熱不氧化性氣體供給管線, (申請專利範圍第13項),使加熱氣體之再循環爲可行 ,以促進熱的有效利用。 本發明之不氧化加熱裝置中蓄熱體之加熱裝置,可選 定氣體燃料燃燒器,液體燃料燃燒器,電阻加熱器,誘導 加熱器及等離子炬(plasma torch)之任一種(申請專利範 園第14項)。藉此,可使裝置因應被加熱體之條件,使 之適應於最適當情況。 又,與該等不同之情況,藉由使用爐內燃燒器氣體作 本紙張尺度遑用中國國家橾準(CNS > A4規格(210X297公釐) --------τγ丨裝------訂------{泌 (請先閲讀背面之注項再填寫本頁) -12 - 經濟部中央橾準局貝工消費合作社印製 A7 B7 五、發明説明(10) 爲蓄熱體之加熱手段(申請專利範圍第15項〉,可有效 利用廢熱來節約能置消耗。 又,在本發明之不氧化加熱裝置中,除了只有不氧化 性氣體以外,可使用對此混合有爆發界限以下之微量還原 性氣體之混合氣體(申請專利範圍第1 6,1 7項)。藉 此使爐內之氛圍成爲還原性,被加熱物之氧化防止可更爲 完全。 〔圖面之簡單說明〕 圖1 ,顯示本發明適用於餵槽之不氧化加熱一實施例 之概念圖。 圖2爲圖1餵槽不氧化加熱中,該餵槽之待機可能時 間之延長效果與習知比較圓。 圖3顯示餵槽不氧化加熱之其他實施例概念圓。 圖4顯示餵槽不氧化加熱中,餵槽溫度之推移圖。 圖5顯示在餵槽不氧化加熱中,再循環使用餵槽內高 溫不氧化性氣體之實施例概念圖。 圖6顯示本發明適用於退火爐不氧化加熱之實施例概 念圖。 圖7顯示鋼材加熱爐中鋼材表面溫度及銹皮產生厚度 關係圖。 圖8顯示走動梁型連績加熱爐中,各區域鋼材表面溫 度之變化圖。 圖9顯示本發明適用於鋼材加熱爐不氧化予以加熱之 本紙張尺度遑用中國國家標隼(CNS ) A4规格(210X 297公釐) - -: nn ill 1 I I n i . J、 i :r 繫 (請先闖讀背面之注春事項再4寫本頁) 訂 經濟部中央橾準局負工消费合作社印裝 A7 B7 五、發明説明(11 ) 實施例概念圖。 圖1 〇顯示鋼材加熱爐概略之大略線圖。 圖1 1顯示鋼材加熱爐之加熱帶及均熱帶中不氧化性 氣體噴霧情形之大略線圖。 .圖1 2顯示鋼材加熱爐不氧化加熱中之實施例與習知 加熱法銹皮降低效果之比較圖。 〔符號說明〕 1 餵槽, 2 熱交換器, 3 變換閥, 5 蓄熱體, 10 未加熱不氧化性氣體供給管線 12 氣體循環用風扇 〔實施發明之最佳狀態〕 本發明人等以不氧化氛圍爲必要之爐的加熱爲主題, 首先,著眼於解決有關再使用餵槽名可H溫直廬复之1 知問題點。有關餵槽之加熱,爲解決習知之問題,不在餵 ϋ!-行燃燒器下再使用餵槽,亦即考量到不預熱不氧化 再使用製程之實現爲必要,而爲加以實現,經多種實驗, 並持績硏究之。 依本發明人等之實驗,通常,鑄造中之餵槽內表面溫 度上升至與焙網溫度大致相等之1 5 4 0〜1 5 7 0 °C左 本紙張尺度適用中國國家橾準(CNS ) A4規格(210X297公釐) 7T <裝------訂------f 1 (請先閲讀背面之注意•事項再4-寫本頁) 14 經濟部中央樣準局員工消費合作社印製 3〇4Q83 A7 B7 五、發明説明(丨2 ) 右爲止。在完成鑄造之同時,溫度開始下降,照常待機時 、 丨 ,例如在7 0 t之餵槽之情況,大約經過6小時後,低於 1 1 0 0。(:,而經過1 4小時後則成爲8 5 0 °C以下。 '........................在未滿8 5 0 °C之溫度,將從澆斗移往餵槽之熔鋼, 從餵槽底部之噴嘴注入鑄模,即使從噴嘴下方進行氧氣吹 V . …- 製起泡(所謂灌腸)亦爲困難。又,待機中餵槽的溫度降 ' .....Ά *·*.! :· »* -*> . - 鋼注入餵槽之際之焙鋼溫度的下降量會變大, 故爲確保鏤造初期之焙鋼溫度有必要使注入時之焙鋼溫度 提高。但是在鑄造後半段,由於餵槽之溫度上升,所以焙 鋼溫度會過高至必要以上,造成声造速度降低而成爲鋳漏 (b r e a k 〇 u t )之原因。因此,實際上,8 5 0 °C爲待機 中乏再使用溫度之下限,亦同時以實驗確認。 而且,伴隨溫度降低,餵槽內壓減少,外部空氣(氧 -......... - 氣)侵入時,餵槽內氧氣澳度會增大。爲防止餵槽再使用 氧化,可知有必要使待機中之餵槽內氧氣濃度 在1 %以下。因此,不使不氧化性氣體所致之餵槽內氣體 _s隨待機中之餵槽溫度降低以防止氧氣侵入,則 必須使餵槽成爲大致完全密閉。前述待機中餵槽溫度降低 之^數値爲該密閉狀態之値。 但是,即使說是完全密閉,例如餵槽內氣體溫度降低 " - ..... Γ I ' ,同時收縮,或餵槽內由於髙溫而進行傾斜角作用,因而 空氣從外部侵入,則無法使空氣侵入爲零。如此,從外部 _ _____________— …5 ' ' 往餵槽內之空氣侵入爲零在實際問題上爲不可能,故要達 成只有密閉之完全不氧化極爲困難。其對策方面有考慮到 本紙張尺度適用中國國家標準(CNS ) A4規格(210X297公釐) --------q -裝------訂------ (請先閲讀背面之注東事項再填寫本頁) -15 - A7 B7 五、發明説明(I3 ) 在不氧化性氣體(例如n2氣體)之連績沖洗下,防止從· * '—.-·,. .......-. I cannot be used in heating furnaces for rolling of steel materials (heating furnaces for hot rolling, thick plate and strip steel, etc.). " (3) Two-layer atmosphere combustion This method is due to: ① In order to form a two-layer atmosphere, due to restrictions on the burner configuration in the bass (for example, the combination of pre-burner and side burner is difficult. This paper standard is applicable to China Standard (CNS > A4 specification (210 X297 mm) Printed by the Central Consumer Standardization Bureau of the Ministry of Economic Affairs A7 __B7_ V. Description of the invention (3)), so in the case of heating large steel, there will be uniform heating temperature The problem of sex, ②The heating capacity / furnace capacity is relatively small compared with the conventional burner, so the furnace will become large, ③When the combustion load changes, the non-oxidizing atmosphere is easy to dissipate. ., '* It is difficult to apply to furnaces with large load fluctuations. For reasons such as, it is not suitable for heating furnaces for hot rolling and thick plate ϊϋϋ large dysprosium rolling. Also, as mentioned above (2) or (3) The method is to obtain a non-oxidizing atmosphere by combustion, because the furnace temperature and combustion conditions (for example, when the steel temperature is> 1 2 0 0 ° C tapir does not get an oxidizing atmosphere, it is necessary to make the combustion gas group. Yiyuan | | r, M | „^ .... 一. _..... ^ v 1. '. ... .. «One--...--One ... becomes CO / ^ COz>〗 〖1 and Η2 / Η2〇> 1.2, using coke oven (coke oven) gas as fuel On occasions, the air ratio H.5H) must be restricted, and there are many restrictions on the operation. To make the surface of the steel material completely non-oxidizing atmosphere, and to make it non-oxidizing atmosphere__, ^^ upu: · IJ JX Jl.- IU 1111- · | υ · || ι... ....... ·, », ,, one * ,,!, -_ * ^ · ', stable and difficult to maintain performance, It cannot fully prevent oxidation. Next, we will explain in detail about the background technology of the heating tank which is a kind of furnace in the continuous casting field. The feeding tank itself does not have a heating element, so when it is used, to ensure that it can be poured ______________________ One-«· 一 · Pouring temperature, it is necessary to use another heating device to heat. In addition, rr * Use multiple feeding troughs to exchange side by side and continuous casting, for example, when changing the steel type, the standby feeding trough Exchange, and the one currently in use is to be used in the room until it is used again. It is necessary to heat the feed tank to the same pouring temperature. And in any occasion , The feeding trough of Xizhi is generally set in »· ...................................................... ....., the gas burner of the preheating cover of the feed trough is used as a heating device for preheating. Specifically, it is theoretically necessary to mix fuel gas such as coal char gas in its gas burner The amount of 1 1 〇 ~ 1 2 0% of the air of this paper standard uses the Chinese national standard (CNS > A4 specification (210X297 mm) --------- >> d ----- -Subscribe ------ ^. Λ (please read the note rf on the back before filling in this page) A7 __B7 5. Description of the invention (4), and burn in the feed tank, pre-heat the inner surface of the feed tank to 1 2 0 0 ~ 1 3> 〇0 ° c. However, in this case, due to the mixing of excess oxygen in the combustion gas, when continuously using the pre-heated feed tank continuously, the residual steel and residue from the previous use (pre-feeding) 'are preheated during the next feed. Oxidation produces FeO (this is called the Fed pick-up phenomenon). At this time, the generated F e 0 reacts with A 1 of the components in the steel to produce A 1 2〇3, and exists in the form of inclusions in the steel, and its fruit is downstream. 1. Ι · ΜΙ 11 ·· ·· ^^, »,»., ^ ,. .v;.,.-During the manufacturing process, quality defects due to A 1 203 foam (Hege · blister-ing) etc. may occur. Various proposals have been made to prevent the establishment of the F e 0 pickup technology. For example, Japanese Patent Laid-Open No. 4-2 2 5 6 7 discloses a feeder preheating method, which uses _V-.., — ^ to supply preheating gas when the continuous feeder feeder is used again The burner 2¾¾¾ is set relative to the supply gas.... .............-·: · ... ^ ____, ______ .........- The theoretically necessary amount is 70 ~ 100%, so that the atmosphere in the feed tank is oxygen ... Μν ...... '' The concentration is lower than the conventional knowledge to suppress residual steel The oxidizer. Printed by the Central Sample Bureau of the Ministry of Economic Affairs and the Cooperative Consumer Cooperative, in Japanese Patent Laid-Open No. 2-3 7 9 4 9 Gazette, as the preheating in the feed tank is completed, when the feed of fuel is stopped, it is inert The Ar gas of the gas drives out the remaining fuel in the burner, and 2¾¾ is preheated in the outer cover. At the same time, the Ar gas for replacement is transported by the Ar pipe dedicated for gas replacement to replace, so that the combustion gas in the feed tank A short period of time with Ar gas .............. I. body replacement, while suppressing residual steel oxidation in the feed tank gas replacement technology. However, the above-mentioned Japanese Unexamined Patent Publication No. 2 — 3 7 9 4 9 and Japanese Unexamined Patent Publication No. 4 — 2 2 5 6 7 all disclose that they are mixed with air to ensure the possible pouring temperature when the feed trough is used. The fuel gas is applied to the Chinese national standard (CNS) A4 specification (210X297 mm) at the size of this paper. 3〇4983 at B7 5. Invention description (5) Burning inside the tank to preheat the inner wall to 1 2 0 0 ~ 1 The conventional method of 3 0 0 ° C is the basic premise. Therefore, on this premise, the aforementioned Japanese Patent Laid-Open No. 2_3 7 9 4 9 technique, especially the problem of residual steel oxidation during preheating when using the re-feeding tank, is suppressed as much as possible, so after the preheating is completed The method of deliberately blowing inert gas into the feed tank and replacing it with a non-oxidizing atmosphere by purge of combustion gas and residual oxygen. Indeed, the forced flushing by inert gas can improve the residual of combustion gas and oxygen, and preheat it. The time until after the gas replacement is completed is more or less shortened. However, it cannot prevent the oxidation of the residue caused by excess oxygen during heating. Furthermore, the temperature of the inner wall of the feed tank is lowered due to gas flushing, and there is a problem of heat loss. 0. In contrast, the latter Japanese Unexamined Patent Heihei 4 1 2 2 5 6 The technology in No. 7 makes it possible to suppress the oxidation of residual steel without performing inert gas flushing by making the air amount of the preheated gas burner less than the theoretically necessary amount, so the former problem does not occur. However, in order to completely prevent oxidation, it is necessary to make the theoretical air volume of the burner below 50%, which will cause the problem of incomplete combustion caused by the indefinite oxygen during combustion, which makes the heating cost very high. Printed by industrial and consumer cooperatives. Furthermore, in the disposal of unburned gases, there will be problems that require safety measures to prevent changes such as fc »... poisoning in C0. ____--- ~-·-—- · _ ♦ The present invention relates to the heating / heat treatment field of gold-thorium materials or the field of steel making / continuous casting, heating in various furnaces necessary for heating in a non-oxidizing atmosphere, and focusing on The first objective of the above-mentioned conventional technology is to provide a method for adding this paper by continuously feeding high-temperature non-oxidizing gases. The paper standard is applicable to the Chinese National Standard (CNS > A4 specification (210X297 mm ) A7 _B7_____ 5. Description of the invention (6) Heat can completely prevent the oxidation of the object to be heated, and the effective use of heat is also possible, and there is no non-oxidation heating method and device without the risk of incomplete combustion or poisoning. The purpose of the present invention is to establish the technology to individually overcome the various problems of the above-mentioned conventional technologies, and the second object is to provide a method for reducing the scale loss by preventing or even inhibiting the oxidation during heating It improves productivity and makes desc-aTing treatment easy through oxidation inhibition, so it can be reflected in the cost of non-oxidation heating methods and devices. • Also, the present invention The third purpose is to provide an effective device for generating high-temperature non-oxidizing gas, especially by heat exchange with the combustion gas in the furnace, which can be obtained by preheating to the temperature of the heating steel or above the furnace or the temperature is too large. Oxidizing gas, which can realize low-cost non-oxidizing heating operation under the formation of a steel heating atmosphere. [Disclosure of Invention] The invention described in items 1 to 11 of the patent application scope of the present invention that achieves the above-mentioned object relates to non-oxidizing Method of heating The method of heating by non-oxidation of the present invention is that when a non-oxidizing atmosphere heated by a high temperature non-oxidizing atmosphere is necessary in the furnace, multiple regenerative heaters are alternately changed and repeated at a predetermined temperature Carry out the heating operation of non-oxidizing gas, so that it is possible to generate high-temperature non-oxidizing gas (f-one -............ 1 Please apply for patent scope item 1). With this, the existence of some slightly oxidizing gas can be ruled out, and it can be supplied into the furnace without interrupting the high temperature and non-oxidizing gas, so as to completely prevent the paper standard from being used in accordance with the Chinese National Standard (CNS) Α4 specification (210Χ29 7mm) Please read the notes on the back first-item before * I like the booklet printed by the Beigong Consumer Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs. 5. Description of the invention (7) Stop oxidation of the heated object. A part of the high-temperature non-oxidizing gas in the furnace is recycled and then used in the heating of the furnace (the patent application item 2), and the effective use of heat can be sought. In addition, the high-temperature non-oxidizing gas supplied to the furnace, It is generated by heat exchange with the combustion gas in the furnace through a regenerative heater (application patent item ΙΙΓϊ), which can be used to learn how to use the waste heat of the combustion gas in the furnace exhausted wastefully and achieve lower cost The non-oxidizing heating operation. The non-oxidizing heating method of the present invention is suitable for the heating of the feed tank of the furnace where the non-oxidizing atmosphere is necessary (item 4 of the patent application scope). In this way, it is known that the preheating caused by the combustion gas in the feed tank when the preheat burner is used when reusing the feed tank that generates residual clang on the inner wall can be eliminated and can be completely prevented The oxidation of the residual steel in the feed trough, that is, to prevent the Fe 0… bismuth ... from being picked up, thereby preventing the production of steel quality defects. Printed by the Zhengong Consumer Cooperative of the Central Ministry of Economic Affairs of the Ministry of Economic Affairs ^ At this time, the heating device outside the feed tank is used to heat k to a non-oxidizing gas of at least 8 5 0 ° C, keep the feed tank heated, and then For the next use (item 5 of patent application), the standby time when the feed tank is reused can be greatly extended than the conventional ones, and the continuous number can be increased. In addition, the non-oxidizing heating method of the present invention can be applied to a steel heating furnace for furnaces where a non-oxidizing atmosphere is necessary (Patent Application No. 6). By this, it is possible to save many restrictions such as combustion conditions, and it is difficult to prevent sufficient oxidation The radiant tube method, the direct reduction heating method, the two-layer atmosphere combustion method and other common knowledge .................................... ........................ '' The heating method without heating the furnace, so that the atmosphere of the steel surface in the heating furnace is stable and kept at a completely non-oxidizing atmosphere, and rust can be achieved The reduction of wastage, which in turn improves the standard of paper production, is applicable to the Chinese National Standard (CNS> A4 specification (210X297 mm). The A7 B7 is printed by the Consumer Labor Cooperative of the Central Standards Bureau of the Ministry of Economy. V. Invention description (8) Product yield. In this case, around the heated steel in the heating furnace, supply high-temperature non-oxidizing gas that is preheated to above the temperature of the heating steel or slightly equal to the temperature of the furnace (application patent scope item 7), to prevent the furnace or steel The temperature decreases, and the heating efficiency is improved. Also, in this case, the surface temperature of the steel exceeds 7 0 OeC heating zone or soaking zone, surrounded by heated steel, so that high-temperature non-oxidizing gas mills are blown to the vicinity of the steel, or by any method such as blowers and a wide range of oxidizing gas mrm in the furnace ( Item 8 of the patent application scope), blocking the heated steel from the oxidizing gas atmosphere in the heating furnace can promote the increase of the yield due to the reduction of the scale loss of the steel. Furthermore, the non-oxidizing heating method of the present invention is applicable The annealing furnace (the patent application item 9) which is not necessary for the oxidizing atmosphere is trapped. In this way, instead of the indirect heating caused by the conventional radiant tube burner, the convection heat transfer heating generated by the high-temperature gas jet flow It can dramatically improve the controllability of the temperature of the plate, such as strips, etc. In the non-oxidizing heating method of the present invention, the inert gas as a non-oxidizing gas or a mixture of micro-children below the combustible limit is used for reduction A mixed gas of inert gas and inert gas is introduced into the furnace, so that the atmosphere in the furnace becomes non-oxidizing or reducing atmosphere. In this case, the inert gas system N2, Αγ alone or mixed Use, the aforementioned reducing gas system H2, CO can be used alone or in combination. (Patent application items 10, 11). Make the furnace atmosphere below the flammable limit reducing atmosphere, so as to make the oxidation prevention effect more complete, and On the one hand, the reduction of oxides is also possible. At the same time, it can be ruled out that this paper standard is applicable to the Chinese National Standard (CNS) A4 specification (2 丨 OX297mm) 4 ', installed — (please read the note on the back *-and then fill in This page) Order 11 304983 A7 B7 Printed by the Beigong Consumer Cooperative of the Central Bureau of Standards of the Ministry of Economy V. Description of the invention (9) Possibility of explosion caused by gas leakage in the furnace, etc. SI Γ ,, ΙΜΜ-The scope of the patent application The inventions described in Items 1 2 to 16 relate to a heating device that does not oxidize. The non-oxidizing heating device of the present invention is a regenerative non-oxidizing heating device that heats the non-oxidizing gas supplied in the furnace necessary for the non-oxidizing atmosphere, has a regenerative hip and its heating device, and also includes: at least to. ..u ....... '................ 2 heat exchangers in a group; and connecting the heat exchanger and unheated non-oxygen ^ ..... .,-The conversion valve of the chemical gas supply line makes any one of the aforementioned heat exchangers a heat storage system that heats the heat storage body: the other is the air supply system that sends JE to heat the non-oxidizing gas, so that both systems use the aforementioned conversion valve Transform, and borrow hot metamorphosis _ .... ..... " '........ ... I) ................ .....-'continuous gas is continuously generated (the patent application item 12 can make sure that the high temperature non-oxidizing gas in the heat exchange can be continuously supplied and supplied to the furnace to prevent the heated object Oxidation. ~ One ..................... '' '' '' ~-~ ¥ * Title ¥ $ -type non-oxidation heating device with gas circulation Fan, and set the circulation path of the heating gas, so that the suction side is connected to the furnace, at the same time, The discharge side is connected to the aforementioned non-heated non-oxidizing gas supply line, (item 13 of the patent application range), and it is feasible to recycle the heated gas to promote the effective use of heat. The heat storage body in the non-oxidizing heating device of the present invention The heating device can be selected from gas fuel burner, liquid fuel burner, resistance heater, induction heater and plasma torch (plasma torch application item 14). This allows the device to respond to The conditions of the heating body are adapted to the most appropriate conditions. In addition, under these different conditions, by using the burner gas in the furnace as the paper standard, the Chinese National Standard (CNS> A4 specification (210X297 mm ) -------- τγ 丨 installed ------ ordered ------ {sec (please read the notes on the back and then fill out this page) -12-Central Ministry of Economic Affairs A7 B7 printed by the industrial and consumer cooperative. V. Description of the invention (10) It is a heating means for the heat storage body (item 15 of the patent application), which can effectively use waste heat to save energy consumption. Also, in the non-oxidizing heating device of the present invention Except for only non-oxidizing gases In addition, it is possible to use a mixed gas mixed with a small amount of reducing gas below the explosion limit (Patent Application No. 16, 17). This makes the atmosphere in the furnace reducible and prevents oxidation of the heated object. More complete. [Simple description of the drawing] Figure 1 shows a conceptual diagram of an embodiment of the present invention applicable to non-oxidizing heating of a feeding trough. Figure 2 is the non-oxidizing heating of the feeding trough of FIG. 1, the standby of the feeding trough may be The effect of time extension is compared with the conventional circle. Figure 3 shows the conceptual circle of the other embodiment of the feeding tank without oxidation heating. Figure 4 shows the temperature transition of the feed tank during non-oxidative heating of the feed tank. Fig. 5 shows a conceptual diagram of an embodiment in which high-temperature non-oxidizing gas in the feed tank is re-used in non-oxidative heating of the feed tank. Fig. 6 shows a conceptual diagram of an embodiment of the present invention applied to an annealing furnace without oxidation heating. Figure 7 shows the relationship between the surface temperature of the steel and the thickness of the scale formed in the steel heating furnace. Figure 8 shows the change in surface temperature of steel in each zone in a walking beam continuous heating furnace. Fig. 9 shows that the present invention is suitable for the paper size of the steel heating furnace which is heated without oxidation. The Chinese national standard falcon (CNS) A4 specification (210X 297 mm)--: nn ill 1 II ni. J, i: r system (Please read the notes on the back of the spring first and then write this page 4) Order the A7 B7 printed by the Consumer Service Cooperative of the Central Bureau of the Ministry of Economic Affairs. V. Description of the invention (11) Conceptual diagram of the embodiment. Figure 10 shows a rough outline of the steel heating furnace. Figure 11 shows a schematic diagram of the non-oxidizing gas spray in the heating zone of the steel heating furnace and the hot zone. Figure 12 shows a comparison of the rust scale reduction effect of the example in the non-oxidative heating of the steel heating furnace and the conventional heating method. [Description of symbols] 1 feed tank, 2 heat exchanger, 3 change valve, 5 regenerator, 10 unheated non-oxidizing gas supply line 12 gas circulation fan [optimum for carrying out the invention] The inventors did not oxidize The atmosphere is the theme of the heating of the necessary furnace. First of all, we will focus on solving the problem of knowing how to reuse the name of the feeding tank. Regarding the heating of the feeding trough, in order to solve the problem of the conventional knowledge, the feeding trough is not used under the feeding ϋ! -Line burner, that is, it is necessary to consider the realization of the re-use process without preheating and oxidation, and to achieve it, after a variety of Experiment and study it. According to the experiments of the present inventors, generally, the inner surface temperature of the feed trough during casting rises to approximately 1 5 4 0 ~ 1 5 7 0 ° C, which is approximately equal to the baking screen temperature. The paper size is applicable to the Chinese National Standard (CNS) A4 specification (210X297mm) 7T < outfit ------ ordered ------ f 1 (please read the notes and matters on the back first 4- then write this page) 14 Central Bureau of Standards, Ministry of Economics employees Printed by consumer cooperatives 3〇4Q83 A7 B7 V. Description of invention (丨 2) Until the right. At the same time when the casting is completed, the temperature starts to drop, and the standby time as usual, for example, in the case of a feed tank of 70 t, after about 6 hours, it is lower than 1 1 0 0. (: And after 14 hours, it becomes below 8 5 0 ° C. '........................ Under 8 5 0 ° The temperature of C will be transferred from the pouring bucket to the molten steel of the feeding trough, and injected into the casting mold from the nozzle at the bottom of the feeding trough, even if the oxygen is blown from below the nozzle V. ...- It is difficult to make bubbles (so-called enema). Also, stand by The temperature drop of the middle feed trough '..... Ά * · *.!: · »*-* ≫.-When the steel is injected into the feed trough, the drop in the temperature of the baked steel will become larger, so in order to ensure the engraving It is necessary to increase the temperature of the steel during the initial injection. However, in the second half of casting, the temperature of the feed tank rises, so the temperature of the steel will be too high to be necessary, resulting in a reduction in the speed of sound production and becoming a leak ( break 〇ut). Therefore, in fact, 8 5 0 ° C is the lower limit of the standby and reusable temperature, which is also confirmed by experiments. Moreover, as the temperature decreases, the internal pressure of the feed tank decreases, and the external air (oxygen- .........-gas) When invading, the oxygen level in the feed tank will increase. To prevent the feed tank from being oxidized again, it is known that it is necessary to keep the oxygen concentration in the feed tank in standby at 1% Therefore, in order not to reduce the gas in the feed tank due to the non-oxidizing gas _s with the temperature of the feed tank during standby to prevent oxygen intrusion, the feed tank must be substantially completely sealed. The temperature of the feed tank during standby is reduced ^ The number value is the value of the closed state. However, even if it is completely sealed, for example, the temperature of the gas in the feed tank is reduced "-.... Γ I 'while shrinking, or the tilt angle of the feed tank due to the high temperature Action, so air intrusion from the outside can not make the air intrusion to zero. So, the air intrusion from the outside _ _____________—… 5 '' It is impossible for practical problems to achieve zero air intrusion into the feed trough, so only a closed It is extremely difficult not to oxidize at all. The countermeasures have taken into account that the paper size is applicable to the Chinese National Standard (CNS) A4 specification (210X297mm) -------- q -installation ----- order --- --- (please read the note on the back of the page before filling in this page) -15-A7 B7 V. Description of the invention (I3) Under the continuous flushing of non-oxidizing gases (such as n2 gas), prevent from

Jt, ------------------ '.'..邮、1|_1»1· 一 餵槽外部之氧氣侵入。爲檢討其可能桎,根據相同》0 t 縝槽所進行乏本發明者等人之實驗時,終於了解以1 2 Ο k ^Jt, ------------------ '.' .. Post, 1 | _1 »1 · 1. Oxygen intrusion outside the feed tank. In order to review its possible structure, according to the same experiment carried out by the inventors of 0 t 缜 槽 without the inventors and others, I finally learned that 1 2 Ο k ^

Nm3/H之比率連續地供給n2氣體於餵槽內並在待機場 ..... .* 合之溫度降低,比先前先前無沖洗的情形更爲激烈,大約 三/〗、時,1 1 0 0 °C,8〜9小時後會造成溫度降至The ratio of Nm3 / H continuously feeds n2 gas in the feed tank and is waiting at the airport .. * The combined temperature is lowered, which is more intense than the previous situation without flushing, about 3 /〗, hour, 1 1 0 0 ° C, 8 ~ 9 hours will cause the temperature to drop

V 8 5 0。(:。 根據此等結果,~本發明人等發現,在再使用餵槽時, 以餵槽外加熱之不氧化性氣體將餵槽內表面溫度保持於爲 可澆注溫度下限之8 5 0 °C以上時,可省略習知餵槽內燃 燒氣體所產生之預熱,可一面在無預熱下防止氧化,一面 ,因而完成本發明。 氣體之加熱裝置並無特別限定,例如將以氣 熱之蓄熱體成爲氣體加熱源之蓄熱式預熱器 誘導加熱,或者利用等離子炬之電氣加熱, 照圓面說明本發明之實施例。 實施本發明餵槽之不氧化保熱方法之裝置的 圓0 ,:L爲容量7 0 t之四連鋳餵槽(T/D) 略餵槽底部之滑動噴嘴,浸漬噴嘴。在該餵 開口 1 b,1 c分別連接爲不氧化性氣體加 式預熱器2,2。該等二台蓄熱式預熱器2 閥3來連接。 本紙張尺度適用中國國家橾準(CNS ) A4規格(210X297公着) 請 先 閲 背 之 注 辜· 再 裝 經濟部中夾橾準局貝工消费合作社印製 供餵槽再使用 不氧化性 體燃燒器所加 ,電阻加熱或 均爲適當。 以下,參 圖1顯示 一實施例概念 在圖1中 。又,圖示省 槽1蓋1 a之 熱裝置之蓄熱 ,2透過變換 訂 -16 - 304983 A7 B7 經濟部中央標準局貝工消费合作社印裝 五、發明説明(14 ) 各蓄熱式 預 熱 器 2 具 備 : 例 如 爲增 大 傳 熱面積 ,充 « .... 塡 成爲球狀或 Έ Z 陶 瓷 或 金 屬 等 所 成蓄 熱 體 之蓄熱 室5 ; 及加熱該蓄熱 體 用 之 燃料 氣 體 U/L· 燒 /5¾ 室6 及 配置於 該燃 燒 /!7〇 室之燃燒器7 9 及 對 該 燃 燒 器 7 之 燃料 供 給 管線8. 和空 氣 WIT# 線 9 〇 丨......—'.·Γ. 變換閥3 具 有 : 將 不 氧 化 性 氣 體供 給 管 線1 0 所供 給 之不氧化性氣 體 ( 例 如 N 2 A r ) 變換至- -台蓄熱式預 _______' 熱器2或另一 台 蓄 熱 式 預 熱 器 2 9 而進 料 至 餵槽內 之路 徑 :及從餵槽內 經 過 任 一 蓄 熱 式 預 熱 器2 所 取 出之氣 體及 燃 λ..............· .· 燒排廢氣經過 排 氣 風 扇 1 1 排 氣 於 外部 之 路 徑,此 兩路 徑 予以自由變換 之 機 能 0 .t,,, .............. 又,變換 閥 ( 裝 置 ) 若 能 滿 足 前所 說 明 路徑之 變換 機 能,則在無圖 *·—.. 3 所 示 之 四 方 變 換 閥 ,以 開 關 閥之組 合亦 可 使用圖1 所 示 之 裝 置 在 不 氧 化性 氣 體 係使用 N 2氣 體,而如下述 資 施餵槽 1 之 不 氧 化 加熱 實 驗 Ο (1 )在 供 初 次 使 用 後 之 餵槽 1裝 設 蓋 1 a, 交互 變 換,二台蓄熱 式 預 熱 器 2 9 2 使 用 ,將 加 熱 至1 3 0 0 °C 5:高溫加熱N 2氣體連續地供給於餵槽1 內’ 使餵槽內保 ^之寅驗: 此時,在 蓄 熱 式 預 熱 器 2 的 燃 燒器 7 > 由燃料 供給 管 線8供給燃料 氣 體 9 由 空 氣 供 給 管 線9 供 給 空氣, 並在 燃 燒室燃燒,藉 以 產 生 7 0 X 1 0 4K c a 1 / H r之熱, 首先加熱蓄熱 -.................. 室 5 之 蓄 熱 體 0 其 後 ,停 止 燃 燒器7 ,從 外 本紙铢尺度適用中國國家標準(CNS〉A4規格(210X297公釐) -17 - A7 B7 五、發明説明(is ) 部透過變換閥3在流量1 8 0 ONm3/Hr下運送>12氣 體,透過加熱之蓄熱體加熱至1 3 0 0 °C以上之溫度,’將 該高溫加熱>^2氣體進料至餵槽1內。一台蓄熱式預熱器 -· L-— 2係使用於N2氣體之加熱中,而另一台蓄熱式預熱器則 進行蓄熱體之加熱。 V . 在該蓄熱體加熱製程,燃燒室6之燃燒完氣體係透過 蓄熱室5,變換閥3而由排氣風扇1 1所吸引排氣。例如 燃燒排廢氣及由餵槽所吸引之N 2氣體合計1 6 0 0〜 2* 0 00 Nm3/H之氣體,在加熱蓄熱體後,在蓄熱體 * ► · 出口側降低至2 0 0〜3 0 0 °C,而’被强制排氣。 進料餵槽1內之高溫加熱N2氣體,從餵槽蓋1 a之 間隙或開口部1 b,1 c等沖放(bolw down)至外部而漏 出,而餵槽1內之內壓比外氣壓保持著高一些,可防止對 餵槽內之外氣侵入。又,使從前述外部供給至餵槽內之 1 8 0 01^1113/111*的1^2氣體置的2 0〜6 0%,經由 2 a的噴嘴再循環,可使燃燒器7的火焰溫度(通常爲 經濟部中央橾準局貝工消費合作社印裝 1 9 0 0 °C (左右))降低,而使用於防止燃燒室5內異 常升之溫度控制,同時,回收N2氣體的廢熱。 使用二台蓄熱式預熱器2,2每6 0秒交互重覆該 . . ·.....-. - N2氣體之加熱,將1 3 0 0 °C以上高溫1^2氣體連績供給 ,使餵槽1之內表面保熱於8 5 0 °C以上之溫 度,並使餵槽內保持於不氧化氛圍,至再使用開始爲止, 可使餵槽待機。 又,在變換蓄熱式預熱器2之際,使一台蓄熱式預熱 本紙張尺度逋用中國國家標準(CNS ) A4規格(210X297公釐) (請先閲讀背面之注意矿項再填寫本頁) -18 - 經濟部中央橾準局負工消費合作社印装 3〇4983 A7 _.,_B7_ 五、發明説明(16 ) 器2之燃燒罨7滅火之後,由一定時間之間排氣風扇1 1 繼績進行該燃燒室6內之强制排氣,藉以使餵槽1內部之 1^2氣體的一部份從蓄熱式預熱器2之高溫N2氣體插入管 1 v 2 a通過燃燒室6,蓄熱室5,變換閥3排出,故可使殘 式預熱器2之燃燒室6,蓄熱室5,變換閥3內 之燃燒氣體在不氧化性氣體沖洗而置換。如此,在變換使 Μ時初期所發生的殘留燃燒氣體之餵槽內混入被防止時, <完全保持餵槽內1成不氧化氛圍。 (2 )不氧化保熱餵槽之待機可能時間延長效果: 其次,使用圖1之裝置,在具有當初1 3 0 0 °C以上 內表面溫度之使用之後的餵槽上,連續地進料8 5 OeC之 *>..... 加熱N2氣體,並在不氧化保熱時,將該餵槽之待機可能 時間之延長效果與習知比較而求得。 其結果示於圖2曲線。 現況有沖洗之曲線顯示,在內表面溫度1 3 5 0 °C之 餵槽加蓋,以1 2 0 Nm 3/ Η之流量供給常溫之N2氣體 ,沖洗餵槽內部並待機情況之餵槽內表面溫度之推移。在 成爲可澆注下限溫度8 5 0 °C爲止之待機時間爲8〜9小 時0 相對於此,依本發明方法,在內表面溫度1 3 5 0 °C 之餵槽,一面供給1 3 0 0 °C之不氧化性氣體,一面保熱 ,藉以大幅延長待機時間爲2 4小時,可增加連續數。 (3 )伴隨微童還原性氣體導入之不氧化保熱: 在圖1之裝置中,連接圇未示出之還原性氣體供給管 本紙張尺度適用中國困家橾準(CNS ) A4規格(210X297公釐) (請先閲讀背面之注意·事項再4-寫本瓦) .裝. 訂 -19 - A7 B7 五、發明説明(17) 線於不氧化性氣體供給管線1 〇,與不氧化性氣體一起將 H2,CO,CH4等還原性氣體(以LPGT等代用ί可 ·**** ' : *- )之任一種微量導入餵槽1內,藉以使餵槽內之氛圍成^ 還原性而保熱。在此,微量係可阻止該還原性氣體漏出餵 槽外部之際的爆發之量,亦即該還原性氣體可燃界限以內 、 __________________________________ 4.................. 之量,例如在112時爲濃度4%以下,C0時使12. 5 %以下之量混合於不氧化性氣體》·使餵槽1內保熱。 ' \ ~藉此,餵槽內氛圍成爲還原氛圍,而無漏出時爆發之 虞,同時可更完全防止殘餘鋼之氧化。 ^ 圚3顯示餵槽不氧化保熱用之不氧化性氣體加熱裝置 之其他實施例。 此係使用非轉運型(non-transfer type)之等離子 炬2 0作爲不氧化性氣體之加熱裝置。該型等離子炬2 0 -*«.—.. ,與g極2 1同時在氮炬本身具有陽極2 2,藉兩電極 2 1,2 2之放電使得經過陰極2 1供給至氣炬之不氧化 、 性氣體流電漿化,藉由如此所之高溫電漿2 3來加熱餵槽 Γ"11 V.....-- 1內壁表面。作爲電漿氣體可使用Ar,N 2等,亦可併 請 先 閲 讀 背V 8 5 0. (:. Based on these results, the inventors found that when the feed tank is reused, the temperature of the inner surface of the feed tank is kept at 8 5 0 ° which is the lower limit of the pouring temperature by the non-oxidizing gas heated outside the feed tank At C or higher, the preheating generated by the combustion gas in the conventional feed tank can be omitted, and the invention can be completed while preventing oxidation without preheating. The heating device of the gas is not particularly limited, for example, gas heating The regenerative body of the regenerative preheater that becomes the gas heating source is induced to heat, or uses the electric heating of the plasma torch, and the embodiment of the present invention will be described according to the round surface. ,: L is a quadruple feeder tank with a capacity of 70 t (T / D). The sliding nozzle at the bottom of the feeder tank and the dipping nozzle are connected. At the feed opening 1 b and 1 c, non-oxidizing gas additive preheating is connected respectively 2, 2. These two regenerative preheaters 2 are connected by valve 3. This paper size is applicable to China National Standard (CNS) A4 specification (210X297 public) Please read the back note first. Reinstall the Ministry of Economic Affairs Printed by the China Fisheries Cooperative Association For the feeding tank, the non-oxidizing body burner is added, and the resistance heating may be appropriate. Below, referring to FIG. 1 shows an embodiment concept in FIG. 1. In addition, the heat saving device of the tank 1 cover 1 a is shown. Heat storage, 2 through conversion order-16-304983 A7 B7 Printed by the Beigong Consumer Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs 5. Description of the invention (14) Each heat storage preheater 2 is equipped with: For example, to increase the heat transfer area, charge «. ... a regenerator 5 that becomes a spherical or ΈZ ceramic or metal regenerator; and the fuel gas U / L · burner / 5¾ chamber 6 for heating the regenerator and is arranged in the combustion /! 7〇 The burner 7 9 of the chamber and the fuel supply line 8 to the burner 7 and the air WIT # line 9... ′. Γ. The changeover valve 3 has: a non-oxidizing gas supply line 1 0 The supplied non-oxidizing gas (for example, N 2 A r) is changed to--one regenerative pre-heater 2 or another regenerative pre-heater 2 9 and is fed into the feed tank. : And from the feeding trough The gas and combustion lambda taken out by any regenerative preheater 2...... · The exhaust gas is discharged through the exhaust fan 1 1 to the external path, this The function of freely changing the two paths is 0 .t ,,,....... In addition, if the conversion valve (device) can meet the conversion function of the path described above, it is not in the picture * · — .. 3 The quadrilateral changeover valve can be combined with the on-off valve to use the device shown in Figure 1 to use N 2 gas in the non-oxidizing gas system, and the non-oxidizing heating experiment of the feed tank 1 as follows Ο (1) Install the cover 1 a in the feed tank 1 for the first use, alternately change, use two regenerative preheaters 2 9 2 and heat to 1 3 0 0 ° C 5: high temperature heating N 2 gas Continuously supplied into the feed tank 1 to ensure the inspection of the feed tank: at this time, the burner 7 of the regenerative preheater 2 is supplied with fuel gas 9 from the fuel supply line 8 and from the air supply line 9 Air, Combustion in the combustion chamber, thereby generating 7 0 X 1 0 4K ca 1 / H r heat, first heat the heat storage -............ The heat storage body of the chamber 5 0 its After that, stop the burner 7 and apply the Chinese national standard (CNS> A4 specification (210X297 mm) from the foreign paper baht scale. -17-A7 B7 V. Description of the invention (is) The flow through the conversion valve 3 is 1 8 0 ONm3 / Hr is transported > 12 gases, heated to a temperature above 1 300 ° C through the heated regenerator, 'heat this high temperature > 2 gas is fed into the feed tank 1. One regenerative preheater-· L--2 is used for heating N2 gas, while the other regenerative preheater heats the regenerator. V. In the heating process of the regenerator, the burned gas system of the combustion chamber 6 passes through the regenerator 5, the change valve 3, and the exhaust fan 11 sucks the exhaust gas. For example, a total of 1 6 0 0 ~ 2 * 0 00 Nm3 / H gas from the combustion exhaust gas and the N 2 gas attracted by the feed tank, after heating the heat storage body, it will be reduced to 2 0 0 ~ on the outlet side 3 0 0 ° C, while 'is forced to exhaust. The high-temperature heating N2 gas in the feeding trough 1 leaks from the gap or opening 1 b, 1 c, etc. of the trough cover 1 a to the outside and leaks out, while the internal pressure in the trough 1 is higher than the outside The air pressure is kept higher to prevent the intrusion of air inside and outside the feed trough. Furthermore, by recirculating 2 0 to 60% of the 1 8 2 gas supplied from the outside to the 1 8 0 01 ^ 1113/111 * in the feed tank, through the 2 a nozzle, the flame of the burner 7 can be made The temperature (usually printed at 190 ° C (around) printed by the Beigong Consumer Cooperative of the Central Bureau of Economic Affairs of the Ministry of Economic Affairs) is reduced, and it is used for temperature control to prevent abnormal rises in the combustion chamber 5 and at the same time, recover waste heat of N2 gas. Use two regenerative preheaters 2 and 2 to repeat this alternately every 60 seconds..... -...-N2 gas is heated, and the high temperature 1 ^ 2 gas above 1 3 0 0 ° C consecutive performance Supply, keep the inner surface of the feed trough 1 at a temperature above 8 5 0 ° C, and keep the feed trough in a non-oxidizing atmosphere until the start of re-use can make the feed trough stand by. In addition, when changing the regenerative preheater 2, use a regenerative preheating paper to use the Chinese National Standard (CNS) A4 specification (210X297mm) (please read the notes on the back before filling in this Page) -18-Printed by the Ministry of Economic Affairs, Central Bureau of Preservation and Consumer Cooperatives 3〇4983 A7 _., _ B7_ V. Description of the invention (16) After the fire extinguisher 7 of the appliance 2 is extinguished, the exhaust fan 1 1 Continue to perform forced exhaust in the combustion chamber 6, so that a part of the 1 ^ 2 gas inside the feed tank 1 is inserted into the tube 1 v 2 a from the high-temperature N2 gas of the regenerative preheater 2 through the combustion chamber 6 Since the regenerator 5 and the shift valve 3 are discharged, the combustion chamber 6 of the residual preheater 2, the regenerator 5, and the combustion gas in the shift valve 3 can be replaced by flushing with non-oxidizing gas. In this way, when the mixing of the residual combustion gas that occurred at the initial stage of the M period in the feed tank is prevented from being changed, < the atmosphere in the feed tank is completely maintained at a non-oxidizing atmosphere. (2) The effect of prolonging the standby time of the non-oxidizing heat preservation feed tank: Secondly, using the device of FIG. 1, the feed tank after the use with the original inner surface temperature of 1 3 0 0 ° C or more is continuously fed 8 5 OeC *> ..... When heating N2 gas and keeping heat without oxidation, the effect of prolonging the standby time of the feed tank is compared with conventional knowledge. The result is shown in the graph of FIG. 2. The current situation shows a flushing curve. The feed tank with an internal surface temperature of 1 3 5 0 ° C is covered with a flow rate of 1 2 0 Nm 3 / H to supply N2 gas at normal temperature. The inside of the feed tank is flushed and the standby tank is in standby. The passage of surface temperature. The stand-by time until it becomes the lowest pouring temperature 8 5 0 ° C is 8 ~ 9 hours 0. In contrast, according to the method of the present invention, the feed tank with an inner surface temperature of 1 3 5 0 ° C is supplied with 1 3 0 0 The non-oxidizing gas at ° C keeps heat on one side, so that the standby time can be greatly extended to 24 hours, which can increase the continuous number. (3) Non-oxidative heat preservation with the introduction of micro-child reducing gas: In the device of Figure 1, the reducing gas supply tube (not shown) is connected to the paper. The paper standard is applicable to China's sleepy family standard (CNS) A4 specification (210X297 Mm) (Please read the precautions and matters on the back first before writing 4-Watts). Binding. Order -19-A7 B7 5. Description of the invention (17) The line is connected to the non-oxidizing gas supply line 1 〇, and the non-oxidizing gas At the same time, any one of H2, CO, CH4 and other reducing gases (substitute LPGT etc. *****: *-) into the feed tank 1 in small amounts, so that the atmosphere in the feed tank becomes ^ reducing Keep warm. Here, the trace amount can prevent the amount of explosion when the reducing gas leaks out of the feed tank, that is, within the flammable limit of the reducing gas, __________________________________ 4 ................... .. The amount is, for example, a concentration of 4% or less at 112, and a quantity of 12.5% or less is mixed with non-oxidizing gas at C0. The heat in the feed tank 1 is kept. '\ ~ In this way, the atmosphere in the feed trough becomes a reducing atmosphere, without the risk of bursting when leaking, and at the same time it can completely prevent the oxidation of residual steel. ^ Qi 3 shows other embodiments of a non-oxidizing gas heating device for non-oxidizing and heat preservation of the feed tank. This is a non-transfer type plasma torch 20 as a non-oxidizing gas heating device. This type of plasma torch 2 0-* «...., with the g pole 2 1 has an anode 2 2 in the nitrogen torch itself, by the discharge of the two electrodes 2 1, 2 2 makes the supply to the gas torch through the cathode 2 1 does not Oxidation and sex gas flow plasma, heating the feeding tank Γ " 11 V .....-- 1 inner wall surface by the high temperature plasma 23 so. As plasma gas, Ar, N 2 etc. can be used, or please read

項一J 再 填· 寫 本 頁 裝 訂 經濟部中央橾準局貝工消費合作社印裝 用HN氣體(H2&N2之混合氣體)。 一_ —般電漿噴流加熱時,雖使用電漿溫度3 0 0 1 0 0 0 o°c,而在本發明之電漿噴流,係使餵槽內氛圍 氣體裏入(entrain),藉以成爲溫度降至2 0 0 0 °C以 、-....................... 下之高溫噴流氣體而使用,以進行不氧化氛圍之1 〇 〇 0 〜1 3 0 0 °C之加熱。亦即,以安裝於餵槽1之蓋1 a的 等離子炬2 0,將進料餵槽1內之不氧化性氣體電漿化, 本紙張尺度遢用中國國家標準(CNS > A4規格(210 X297公釐) -20 - 304383 B7 經濟部中央標準局員工消费合作社印製 五、發明説明(18 ) 並 吹 入 餵槽1 之底 部。 該 加 熱 時 之 熱 移 動 係 具 有 - 來 白 髙 溫 氣 體 流 之對流 傳達 ,及 以 — 此 加 熱 之 從 餵 槽 底 面 至 另 —* 面 的 -放 射 ....................... 熱等傳 達之 形態 0 ’..·· , 但 是在電 漿噴 流加 熱 之 情 形 , 由 於 運 轉 費 用 減 低 9 在 餵槽 再 使用前 ,爲 確保 餒槽 內 表 面 溫 度 1 3 0 0 °c 9 只 於 必 ·«, 要 時 間加熱 ,在 此以 外 之 待 機 時 間 中 則 爲 Jrrf. m 預 熱 待 機 圖 4顯示 依據 等離 子 炬 2 0 之 餵 槽 不 氧 化 保 熱 實 願 之 實 施 結 果0 使在鋳造 中1 5 7 0 °c 溫 度 之 餵 槽 成 Αττ— m 預 熱 待 機 時 9 在 待 機 時間7 小時 ,餵i 內 表 面 溫 度 降 低 至 1 1 0 0 °c 以 下 〇 接 著以使 用等 離子 炬 2 0 之 N 2氣體電漿噴流 開始 餵 槽 內 不氧化 加熱 '在 4 小 時 後 9 餵 槽 內 表 面 溫 度 到 達 巨 標 的 1 3 0 0 。(:而 可再 使 用 〇 合 計 待 機 時 間 爲 1 1 小 時 9 此 時 1 9 在其他 餵槽 ,1 次加 料 4 0 分 鐘 之 鋳 造 可 以 1 6 次 加 料 進 行。 又 ,在上 述實 施例 9 作 爲 餵槽 不 氧 化 保 熱 方 法 中 之 不 氧 化 性 氣體之 電加 熱裝 置 9 係 以 使 用 等 離 子 炬 之 場 合 說 明 9 除 Έ 之外使 用電 誘導 加 熱 器 或 電 阻 加 熱 器 亦 可 〇 圖 5顯示 其他 實施 例 〇 該 實施例 爲加 熱氣 體 之 一 部 份 再 循 環 使 用 之 餵槽 的 不 氧 化 加 熱之例 〇 與 圖1同 樣設 備, 如 圖 5 所 示 配 設 使 餵槽 1 內 高 溫 N 2氣體循環之循環用風扇1 2 〇 其後, 將該吸引側配管 本紙張又度適用中國國家梂準(CNS ) A4洗格(210X297公釐) -21 - A7 B7 五、發明説明(19 ) 1 3插入餵槽之蓋1 a,同時,使排出側配管1 4連接 广 .- -..μ.·. λ J ' · . , >· ......tplfnet | _ ............................ ........... n 2m給管線1 〇。 ~如此,由循環用風扇1 2取出餵槽1內高溫N2氣體 丨...一一.-.一 一 ―1-‘:一... .·..... 之一部份,並進BN 2氣體供給管線1 〇,再循環之。藉 此可~回收廢熱的一部份,以提高系統的熱效率。 又,可將循環用風扇12之吸引側配管13連接餵_ 1底部之圖未示出噴嘴。在此場合,具有高溫N2氣體之 一部έ通過噴嘴,藉以同時進行噴嘴保熱之優點。 圖6進而顯示其他實施例。 該實施例爲在板條退火爐之不氧化加熱源適用蓄熱式 .... .______—....... · - ...... 預熱器2之例。 習知之退火爐的加熱,係由輻射管燃燒器之間接加熱^ ,但適用本發明多台蓄熱式預熱器2交互變換而使用之方 ...... - -------- - - - 法,ΪΓ高溫HN氣體加熱,可使高溫氣體噴流之對流傳熱 加''熱爲可行。其結果,可飛躍地提高板溫控制性。此次係 ΙίΓϊϊ遇帶(chamce free帶)使用,而以加熱帶之一部 @使用亦可。 經濟部中央標準局真工消費合作社印製 又,上述各實施例係述及不氧化加熱之被加熱體爲餵 槽及退火爐之場合,而上述實施例中N 2氣體被替代以 __一二—,一 —“—-— ' HN氣體(112及1^2之混合氣體)使用,使得被加熱體在 鋼材料之加熱爐之場合亦同樣適用。 .., 因此,接著,就有關可抑制因加熱爐由鋼材加熱時氧 化所產生的銹皮損耗,可提高產率之本發明鋼材之不氧化 加熱技術予以說明。 本紙張尺度適用中國國家橾準(CNS ) A4規格(210X297公釐) -22 - 經濟部中央樣準局貝工消費合作社印袈 A7 _B7_ 五、發明説明(20) 此場合之技術特徴,係在裝入加熱爐內之鋼材周圔, 製造局部不氧化性氛圍,因此,將1^2或A r等惰性氣體 或含有可燃界限以下之Η2或C0氣體之還原性氣體,或 前述惰性氣體及還原性氣體之混合氣體的高溫不氧化性氣, 體噴霧鋼材周圍,使該鋼材與爐內之氧化性燃燒氣體隔離 。因此,對該鋼材噴霧之上述高溫不氧化性氣體,爲防止 爐溫之降低及加熱途中鋼材之冷叩,則供給預熱至爐溫大 ------------------ .... .... 致相等或鋼材溫度以上之物。 圖7顯示鋼材用加熱爐內中,鋼材表面溫度及銹皮生 成厚度之關係,鋼材表面溫度超過8 0 0 °C時,氧化急遽 地進行,銹皮厚度爲〇.1mm以上。該銹皮厚度之等級 中,在去垢處理之負載增大之同時,銹皮亦變多,產率之 降低極爲顯著。 " 因此,本發明中,覆蓋鋼材表面之不氧化性氣體噴射 ,在鋼材爲8 0 0 °C以上,更佳.爲氧化在急遽進行之跟前 s» ^ ·· ·*~·· · — · 的7 0 0 °C以上之區域中,如上述,將預熱成爐內氛圍溫 « 度(爐溫)以上之上述不氧化性氣體,直接對鋼材吹製, 或者供給至可與爐內產生之氧化性燃燒氣體置換之程度。 V. 圖8顯示走動梁型連績加熱爐中,各區域(第一加熱 帶,第二加熱帶,均熱帶)中,鋼材表面溫度之變化,銹 皮之產生量變多,超過8 0 0 °C區域之第二加熱帶以後, 此意味,上述高濕不氧化性氣體之供給位置,在鋼材表面 溫度超過8 0 0 °C之第二加熱帶以後,至均熱帶出口側爲 止之間進行較佳。 本紙張尺度適用中國國家梂準(CNS ) A4規格(210X297公釐) (請先閱讀背面之注意事項再填_寫本頁) •裝 訂 -23 - 經濟部中央橾準局—工消费合作社印製 ^04983 A7 B7 五、發明説明(21〉 其高溫不氧化性氣體之供給方法,係以爐側面,頂板 -- _______ .—… ..' .、 或爐床方向以'"包圍€1ί熱鋼材之方式噴射,與加熱帶或均 1 '熱ϋ高·溫氧化性燃燒氣體置換,將爐內氛園全體成爲不 II -I - -........ - ............ 氧化性之吹製方法極爲有效。 k 又,在鋼材周匯噴霧之高溫不氧化性氣體,係由與因 爐的熱負載而變動之燃燒器等之燃燒系統爲獨立之系統所 」0給。因此,加熱上最適條件及氧化防止爲必要條件經常 被調整成最適値,並予維持甚爲重要。 其後,上述之高溫不氧化性氣體,係在附加於加熱爐 L丨·· —·—·<«.» . ,, 而設之作爲不氧化加熱裝置的不氧化性氣體預熱裝置中, 利用與該加熱爐燃燒氣體之熱交換所產生者。 Κ__^一.-一..-一一一 …_ ------------—. 圓9顯示該不氧化性氣體預熱裝置之概念圖,爲具有 -,.ι.Λ»·. - - - . . _ 至少二台爲一組之蓄熱體A,B的熱交換器,該蓄熱體A ,B任一台(A)成爲蓄熱系統,另一台之高溫蓄熱體B (ί上述A般,爲已加熱者)係加熱不氧化性氣體而送風 之送風系統,可交互變換兩者之角色使用。在使蓄熱系統 側之蓄熱體成爲髙溫用之加熱裝置方面,係利用加熱爐所 溫燃燒排廢氣(1 3 0 0 °C),使其導入蓄熱體 進行蓄熱體加熱。一方面在送風系統之蓄熱體,例如使常 化性混合氣體(N2+H2,3 0°C)從反方向導 入進行熱交換,藉以產生髙溫不氧化性氣體(1 2 Ο 0〜 1 2 5 0 °C)並反向朝加熱爐內吹入。 兩蓄熱體A及B與常溫不氧化性氣髏之供給管線係透 過變換閥3連接,藉該變換閥3使蓄熱體A,B之角色變 本紙張尺度逋用中國國家橾準(CNS > Μ規格(210X297公釐) --------AI-裝------訂------^ ^ (請先閲讀背面之注袁事項再ifc·寫本頁) -24 - A7 _B7_____ 五、發明説明(22 ) 換,並順序熱交換,而使高溫不氧化性氣體在無燃燒器構 ϋ熱交換器連績地產生。 1 _ --------' ^ 又,在對上述高溫不氧化性氣體之加熱爐內供給時, 、 - - | I, ........ ...... 由該高溫不氧化性氣體及燃燒器燃燒火焰(氧化性氣體) *M-、· ^ * 之i合,來防止本發明作用效果之減弱,故將該高溫不氧 Ϊ 化性氣體之往鋼材周圍的噴霧角度與加熱用燃燒器火焰軸 r. |l_ _ .., « 爲儘可能地平行噴霧爲所期望。又在噴霧時之流速與加熱 用燃燒器之火焰速度大致相同爲所期望。 例如,如圖1 0所示,在燃燒器配列之鋼材加熱爐之 情形,在第2加熱帶,如圖1 1 ( a )所示,肉側壁噴霧 。又在均熱帶,係如圖11(b)所示,考慮到從側壁噴 · -·-..... 籌,同時從燃燒器之間噴霧的方法,而吹製裝置之設置空 間上的問題若可解決,則自燃燒器之間噴霧爲所期望。又 ,噴霧用噴臚可使用陶瓷製之各種形狀,而儘量接近鋼材 者,由於在鋼材周圍易於產生完全不氧化性性氛園,故氧 化抑制效果大。 經濟部中央標準局負工消费合作社印製 (請先閲讀背面之注$項再本寫本頁) 又,在吹入不氧化性氣體之流量方面,使均熱帶側比 加熱帶側之流量爲大,可使高溫部之〇2濃度相對地降低 ^^^****.~~~~'~~丨 丨 | I --.**"· ****** * ,故總體之氧化抑制效果會變大。 又,在對該高溫不氧化性氣體之均熱帶供給時,由於 鋼材表面被加熱至高溫,即使設定該帶域內氛圍中之02 濃度爲低,氧化量亦不會減多少。而另一方面,加熱所需 燒負載爲小,燃燒器容量亦小。在此情形,與朝鋼材 表面直接噴霧不氧化性氣體比較,還是將區域內全域(此 ---------------...一.. ....... 本紙張尺度逋用中國國家橾準(CNS > Α4規格(210Χ297公釐)~- -25 - A7 B7 經濟部中央標準局另工消費合作杜印簟 五、發明説明(23 ) 情形爲均熱帶全域)以髙溫不氧化性氣體置換之氛圍較佳 與# DHCR等之實施,而以加熱能力小完成之情況 i 相同。 ^ 在本發明之加熱爐內鋼材之不氧化加熱中,爲產生爐 溫以上的髙溫不氧化性氣體,使用上述不氧化性氣體預熱 ^置雖可,而其他方法,例如含有微量還原性氣體之非轉 電漿噴流亦可。但是爲降低裝置及加熱成本,最好的 .................. 方法爲使用利用爐內燃燒排廢氣之蓄熱式前述不氧化性氣 體預熱裝置。 以下,顯示本發明加熱爐內鋼材之不氧化加熱法與習 知加熱法對此之試驗例。 ① 在圖1 0所示之走動梁型熱軋加熱爐中,將加熱至 1 1 5 0°C之熱軋鋼材加熱之試驗例,如圖9所示,使用 ....... ------.·----------------- ------ 不氧化性氣體預熱裝-,產生高溫不氧化性氣體( n2& ϋ合氣體),使該氣體如圖1 ο,圖1 1所示,在 w· - —____^...^~·:·—·-·...... * 第2加熱帶及均熱帶分別以燃燒器總燃燒氣體量1 / 5〜 1 / 1 0之流量吹入,來測定鋼材之氧化厚度(mm )。 ② 相對於此,在通常加熱法,直火還原加熱法及二層 氛圍燃燒法之下所加熱之情形,分別測定鋼材之氧化厚度 (mm) ° _1 2說明此試驗例之比較。如圖1 2所示,依本發 .-'V· " 明之不氧化加熱方法,可降低銹皮生成厚度約4 0 %。 〔產業上利用可能性〕 (請先閲讀背面之注意事項再填寫本頁) Ύ '裝. 訂 本纸張尺度適用中國國家標準(CNS ) A4規格(210X297公釐) -26 - A7 B7 五、發明説明(24) 如上述說明,本發明之不氧化加熱技術,基本上係交 互變換多台蓄熱式加熱器,同時重覆不氧化性氣體加熱i 請 先 閲 讀 背 之 注 意 事 項 再 規定溫度之操作,連績地供給所得到之高溫不氧化性氣體 ,將不氧化氛圍爲必要之爐內以高溫不氧化性氣體加熱者 。因此,不會如習知技術在爐內產生高溫氧化性氣體,可 完全防止被加熱體氧化,故澆斗,餵槽等製鋼。連績ssIt 領域中各種爐,及含非鐵金屬之金靥材料之加熱等之加熱 。ϋ理領中各種爐中,作爲不氧化加熱技術特別有用。 尤其是,將所得到的高溫不氧化性氣體之一部份予以 再循環並再使用於爐內加熱,或利用爐內燃燒氣體之廢熱 於蓄熱式預熱器之預熱,可有效地利用熱,對作業成本降 低極爲有利。尤其是適於不氧化氛園爲必要之餵槽的加熱 。在此情形,在再使用內壁產生殘餘鋼之餵槽時,可節省 習知慣用之預熱燃燒器的餵槽內燃燒氣體所產生的預熱, 可完全防止餵槽內殘餘鋼的氧化,並防止製品鋼品質缺陸 之產生。又,可使餵槽再使用時之可待機時間比習知更大 幅延長,而增加連績數。 經濟部中央標準局負工消費合作社印装 再者,本發明$不氧化加熱技術亦適用於鋼材之加熱 爐。在此情形,燃燒條件等限制多,且充分氧化防止爲困 難之輻射管法,直火還原加熱法,二層氛圍燃燒法等習知 之加熱爐不氧化加熱法可被省略,使得加熱爐內鋼材面之 氛園安定,並保持於完全的不氧化氛圍,而可呈現銹皮損 耗之降低進而使製品產率之提高。 再者,本發明亦適於退火爐。在此情形,進行高溫氣 本紙張尺度遑用中國國家揉準(CNS ) A4規格(210X 297公釐) 27 A7 B7 S04983 五、發明説明(25 ) 體噴流之對流傳熱加熱以替代習知輻射管燃燒器之間接加 熱/ ¾ 躍地提髙例如板條等被加熱材料之板溫度控制性 經濟部中央梂準局男工消費合作社印製 本紙張尺度遑用中國國家標率(CNS ) A4規格(210X297公釐) 28Item 1J Refill and write This page binding HN gas (H2 & N2 mixed gas) for printing and printing of the Beigong Consumer Cooperative of the Central Bureau of Economic Affairs of the Ministry of Economic Affairs. 1. In the general plasma jet heating, although the plasma temperature is 3 0 0 1 0 0 0 o ° c, in the plasma jet of the present invention, the atmosphere in the feed tank is entrained to become The temperature is lowered to 2 0 0 0 ° C, -......................... used under high temperature jet gas, for non-oxidizing atmosphere 1 〇〇0 ~ 1 3 0 0 ° C heating. That is, the plasma torch 20 installed in the cover 1 a of the feed trough 1 is used to plasmaseize the non-oxidizing gas in the feed trough 1. This paper standard uses the Chinese National Standard (CNS> A4 specification ( 210 X297 mm) -20-304383 B7 Printed by the Consumers ’Cooperative of the Central Bureau of Standards of the Ministry of Economic Affairs 5. Description of the invention (18) and blown into the bottom of the feed trough 1. The heat movement during heating is provided by-high temperature gas Convection of the flow, and-the heat from the bottom surface of the feed tank to the other-* surface-radiation ....................... heat is communicated Form 0 '.. ··, but in the case of plasma jet heating, the operating cost is reduced 9 Before the feed tank is reused, in order to ensure the temperature of the inner surface of the tank 1 3 0 0 ° c 9 is only necessary. Time heating, other than the standby time is Jrrf. M preheating standby Figure 4 shows the results of the implementation of the actual hope of non-oxidation and heat preservation according to the plasma torch 2 0 Medium 1 5 7 0 ° C temperature feed trough is Αττ— m preheating standby 9 During the standby time 7 hours, the internal surface temperature of the feed i drops below 1 1 0 0 ° C. Then use the plasma torch 2 0 N 2 The gas plasma jet begins to heat in the feed tank without oxidation. After 4 hours 9 the surface temperature of the feed tank reaches the giant standard 1 3 0 0. (: And can be reused. The total standby time is 1 1 hour 9 at this time 1 9 In other feeding troughs, the feeding can be carried out 16 times in a feed of 40 minutes. In addition, in the above embodiment 9, the electric heating device 9 as the non-oxidizing gas in the non-oxidizing heat preservation method of the feeding trough uses plasma Description of the occasion of the torch 9 In addition to Έ, an electric induction heater or a resistance heater can also be used. FIG. 5 shows other embodiments. This embodiment is an example of non-oxidative heating of a feed tank in which a part of the heating gas is recycled. 〇Yu 1 The same equipment, as shown in Figure 5, is equipped with a circulation fan 1 2 for circulating high-temperature N 2 gas in the feed tank 1. After that, the paper on the suction side piping is again applicable to the Chinese National Standards (CNS) A4 washing Grid (210X297mm) -21-A7 B7 V. Description of the invention (19) 1 3 Insert the cover of the feeding trough 1 a, and at the same time, make the discharge side piping 1 4 wide.--.. μ. · .. λ J ' ·., ≫ · ...... tplfnet | _ ............................ ....... .... n 2m to pipeline 1 〇. ~ In this way, the high-temperature N2 gas in the feed tank 1 is taken out by the circulating fan 12 2 ... one one ...-. One one ―1- ': one ... ...... The BN 2 gas supply line 10 is recycled. This can recover part of the waste heat to improve the thermal efficiency of the system. In addition, the suction side piping 13 of the circulation fan 12 may be connected to the bottom of the feeder-1, and the nozzle is not shown. In this case, part of the high-temperature N2 gas passes through the nozzle, thereby simultaneously maintaining the nozzle heat. Fig. 6 further shows other embodiments. This embodiment is an example in which a regenerative type is applied to the non-oxidizing heating source of the lath annealing furnace....... The heating of the conventional annealing furnace is connected by the heating of the radiant tube burner ^, but it is suitable for the use of multiple regenerative preheaters 2 of the present invention to alternately transform and use ...-------- ----Method, ΪΓ high temperature HN gas heating, can make the convection heat transfer of high temperature gas jets add heat is feasible. As a result, the board temperature controllability can be dramatically improved. This time it is used with a chamce free belt (chamce free belt), but it can also be used with one part of the heating belt. Printed by the Real Industry Consumer Cooperative of the Central Bureau of Standards of the Ministry of Economic Affairs. The above embodiments describe the case where the non-oxidized heating body is a feeding tank and an annealing furnace. In the above embodiments, N 2 gas is replaced by __1 The use of HN gas (mixed gas of 112 and 1 ^ 2) makes the heated body also suitable for the heating furnace of steel material .. Therefore, then, the relevant The non-oxidizing heating technology of the steel of the present invention that suppresses the scale loss caused by the oxidation of the heating furnace when the steel is heated and can increase the yield will be explained. The paper size is applicable to the Chinese National Standard (CNS) A4 specification (210X297 mm) -22-A7 _B7_, Beigong Consumer Cooperative of the Central Prototype Bureau of the Ministry of Economic Affairs 5. Description of the invention (20) The technical characteristics of this occasion are that the steel is put into the heating furnace to create a local non-oxidizing atmosphere, so , Spray inert gas such as 1 ^ 2 or Ar or reducing gas containing H2 or C0 gas below the flammable limit, or a mixed gas of the aforementioned inert gas and reducing gas at high temperature, spray around the steel, The steel is isolated from the oxidizing combustion gas in the furnace. Therefore, the above-mentioned high-temperature non-oxidizing gas sprayed on the steel is supplied with preheating until the furnace temperature is large to prevent the temperature of the furnace and the cold knock of the steel during heating. ----------------- ...... which is equal to or higher than the temperature of the steel. Figure 7 shows the surface temperature and scale of the steel in the heating furnace for steel The relationship between the thickness and the steel surface temperature exceeds 800 ° C, the oxidation is carried out rapidly, and the thickness of the scale is 0.1mm or more. In this grade of scale thickness, while the load of the descaling treatment increases, the rust The skin also increases, and the yield reduction is extremely significant. &Quot; Therefore, in the present invention, the non-oxidizing gas spray covering the surface of the steel is more than 800 ° C in the steel, which is better. For the oxidation to proceed before the rapid s »^ ··· * ~ ··· — — in the area above 7 0 0 ° C, as above, preheat the above non-oxidizing gas above the furnace atmosphere temperature (furnace temperature) above, directly Blow the steel, or supply it to the extent that it can be replaced with the oxidizing combustion gas generated in the furnace. V. Figure 8 In the walking beam type continuous heating furnace, in each area (the first heating zone, the second heating zone, and the hot zone), the change in the surface temperature of the steel material increases the amount of rust, which exceeds the number in the area of 800 ° C. After the second heating zone, this means that the supply position of the above-mentioned high-humidity non-oxidizing gas is preferably performed after the second heating zone where the surface temperature of the steel material exceeds 800 ° C, until the exit side of the soaking zone. Standards apply to China National Standards (CNS) A4 (210X297mm) (please read the notes on the back before filling in _write this page) • Binding-23-Printed by the Central Bureau of Industry and Commerce-Cooperative and Consumer Cooperative ^ 04983 A7 B7 V. Description of invention (21> The method of supplying high-temperature non-oxidizing gas is based on the side of the furnace and the top plate-_______.......... Or the direction of the furnace bed is surrounded by '" Jetting, replacing with heating zone or even 1 'hot high temperature oxidizing combustion gas to make the whole atmosphere garden in the furnace II -I--........-....... .... The oxidative blowing method is extremely effective. k In addition, the high-temperature non-oxidizing gas sprayed on the periphery of the steel is provided by a system independent of the combustion system such as the burner that fluctuates due to the thermal load of the furnace. Therefore, it is very important that the optimal conditions for heating and the prevention of oxidation are necessary to be adjusted to the optimal values, and it is necessary to maintain them. After that, the above-mentioned high-temperature non-oxidizing gas is added to the heating furnace L 丨 ····· < «.»., And is set as a non-oxidizing gas preheating device as a non-oxidizing heating device , Using the heat exchange with the combustion gas of the heating furnace. Κ __ ^ 一 .- 一 ..- 一一 一一… _ ------------—. Circle 9 shows the conceptual diagram of the non-oxidizing gas preheating device, with-,. ι. Λ »·.---.. _ At least two heat exchangers of a group of heat storage bodies A, B, any one of the heat storage bodies A, B (A) becomes a heat storage system, and the other high temperature heat storage body B (Like the above A, which is heated) is a supply air system that supplies air by heating non-oxidizing gas, and can alternately use the roles of the two. In the aspect of making the heat storage body on the side of the heat storage system a heating device for high temperature, the exhaust gas (1 300 ° C) is burned at the temperature of the heating furnace and introduced into the heat storage body to heat the heat storage body. On the one hand, in the heat storage body of the air supply system, for example, the normalized mixed gas (N2 + H2, 30 ° C) is introduced from the opposite direction for heat exchange, thereby generating a high temperature non-oxidizing gas (1 2 Ο 0 ~ 1 2 5 0 ° C) and blow into the furnace in the opposite direction. The supply lines of the two regenerators A and B and the room temperature non-oxidizing gas skeleton are connected through a changeover valve 3, by which the role of the regenerators A and B is changed to the paper standard to use the Chinese National Standard (CNS > Μ specification (210X297mm) -------- AI-installed ------ ordered ------ ^ ^ (please read the note on the back and then ifc · write this page)- 24-A7 _B7_____ V. Description of the invention (22) Exchange and heat exchange in sequence, so that high-temperature non-oxidizing gases are continuously produced in a heat exchanger without a burner. 1 _ -------- ' ^ In addition, when supplied to the heating furnace of the above-mentioned high-temperature non-oxidizing gas,,--| I,..... ....... The high-temperature non-oxidizing gas and the burner burn the flame (Oxidizing gas) * M-, · ^ * is combined to prevent the weakening of the effect of the present invention, so the spray angle of the high-temperature non-oxygenating oxidizing gas around the steel and the flame axis r of the burner for heating . | l_ _ .., «It is desirable to spray as much as possible in parallel. The flow rate during spraying is approximately the same as the flame speed of the burner for heating. For example, as shown in FIG. 10, in the burner Match In the case of the steel heating furnace, in the second heating zone, as shown in Figure 11 (a), the meat side wall is sprayed. In the even tropical zone, as shown in Figure 11 (b), consider spraying from the side wall-- -..... At the same time, the method of spraying from between the burners, and if the problem of the installation space of the blowing device can be solved, the spray between the burners is expected. Also, the spray spray can be used Those with various shapes made of ceramics and as close to steel as possible are likely to produce a completely non-oxidizing atmosphere around the steel, so the oxidation inhibition effect is large. Printed by the Consumer Labor Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs (please read the back side first (Note $ item and write this page again) In addition, in terms of the flow rate of the non-oxidizing gas to be blown, the flow rate on the soaking zone side is larger than that on the heating zone side, which can relatively reduce the 〇2 concentration in the high temperature part ^^^ * ***. ~~~~ '~~ 丨 丨 | I-. ** " · ****** *, so the overall oxidation inhibitory effect will become larger. In addition, the high temperature is not oxidizing When the gas is evenly supplied with heat, since the surface of the steel is heated to a high temperature, even if the 02 concentration in the atmosphere in the band is set to be low, the amount of oxidation It will not be reduced much. On the other hand, the burning load required for heating is small, and the burner capacity is also small. In this case, compared with spraying non-oxidizing gas directly on the steel surface, the whole area is still used (this- -------------... 1.... ....... This paper uses the Chinese National Standard (CNS> Α4 specifications (210Χ297mm) ~--25 -A7 B7 Ministry of Economic Affairs Central Bureau of Standards and Labor and Consumer Cooperation Du Yinmo 5. Description of the invention (23) The situation is all tropical zone) The atmosphere with high temperature non-oxidizing gas replacement is better and # DHCR and other implementations, and heating The case of small capacity completion is the same. ^ In the non-oxidizing heating of the steel in the heating furnace of the present invention, in order to generate a high temperature non-oxidizing gas above the furnace temperature, the above non-oxidizing gas is used for preheating ^ Although it is possible, other methods, for example, contain trace reducing Non-rotating plasma jet of gas is also acceptable. However, in order to reduce the cost of equipment and heating, the best method is to use a regenerative non-oxidizing gas preheating device that utilizes combustion exhaust gas in the furnace. The test examples of the non-oxidizing heating method and the conventional heating method of the steel material in the heating furnace of the present invention are shown below. ① In the walking beam type hot rolling heating furnace shown in Figure 10, a test example of heating hot rolled steel heated to 1 150 ° C is used as shown in Figure 9, using ... -----. · ----------------- ------ Non-oxidizing gas preheating equipment-, producing high-temperature non-oxidizing gas (n2 & Gas), make the gas as shown in Figure 1 ο, Figure 11, in w ·-—____ ^ ... ^ ~ ·: · — ·-· ...... * 2nd heating zone and even tropical zone The oxidized thickness (mm) of the steel material is measured by blowing in the flow rate of 1/5 to 1/10 of the total combustion gas volume of the burner. ② On the contrary, in the case of heating under normal heating method, direct fire reduction heating method and two-layer atmospheric combustion method, the oxidation thickness of the steel material (mm) is measured respectively. As shown in Figure 12, according to the present invention .- 'V · " the non-oxidizing heating method can reduce the thickness of rust formation by about 40%. 〔Industry utilization possibilities〕 (Please read the precautions on the back before filling in this page) Ύ 'Package. The size of this paper is applicable to the Chinese National Standard (CNS) A4 specification (210X297 mm) -26-A7 B7 V. DESCRIPTION OF THE INVENTION (24) As described above, the non-oxidizing heating technology of the present invention basically basically changes multiple regenerative heaters and repeats the non-oxidizing gas heating at the same time. Please read the precautions before specifying the temperature. , Continuously supply the obtained high-temperature non-oxidizing gas and heat the high-temperature non-oxidizing gas in the furnace where the non-oxidizing atmosphere is necessary. Therefore, the high-temperature oxidizing gas is not generated in the furnace as in the conventional technique, and the oxidation of the heated body can be completely prevented. Therefore, steel is made in the hopper, feed trough, etc. Success in the heating of various furnaces in the field of ssIt and the heating of gold-containing materials containing non-ferrous metals. ϋ It is particularly useful as a non-oxidizing heating technology in various furnaces in the collar. In particular, part of the obtained high-temperature non-oxidizing gas is recycled and reused for heating in the furnace, or the waste heat of the combustion gas in the furnace is used for preheating of the regenerative preheater, which can effectively use the heat , It is extremely beneficial to reduce operating costs. It is especially suitable for the heating of non-oxidizing atmosphere garden as the necessary feed tank. In this case, when reusing the feed tank that generates residual steel on the inner wall, the preheat generated by the combustion gas in the feed tank of the conventional preheat burner can be saved, and the oxidation of the residual steel in the feed tank can be completely prevented. And to prevent the production of steel quality shortage of land. In addition, the standby time when the feeding trough is reused can be extended to a greater extent than conventional knowledge, and the number of consecutive records can be increased. Printed by the Consumer Labor Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs. Furthermore, the non-oxidizing heating technology of the present invention is also applicable to steel furnaces. In this case, there are many restrictions on the combustion conditions, etc., and the radiant tube method, direct fire reduction heating method, two-layer atmosphere combustion method, and other conventional heating furnace non-oxidizing heating methods, such as difficult to prevent sufficient oxidation, can be omitted, so that the steel in the heating furnace The atmosphere of the surface is stable and kept in a completely non-oxidizing atmosphere, but it can reduce the loss of scale and improve the product yield. Furthermore, the present invention is also suitable for annealing furnaces. In this case, the high-temperature gas-based paper standard is used in the Chinese National Standard (CNS) A4 specification (210X 297 mm) 27 A7 B7 S04983 5. Description of the invention (25) Convective heat transfer heating of the body jet to replace conventional radiation In-line heating of the tube burner / ¾ The temperature of the heated material, such as the slats, is swiftly raised. The temperature is controlled by the Ministry of Economic Affairs, Central Enclosure Bureau, Men ’s Industrial Consumer Cooperative. This paper is printed using the Chinese National Standard (CNS) A4 standard. (210X297mm) 28

Claims (1)

ABCD fit 年ABCD fit year 六、申請專利範圍 第84113251號專利申請案 中文申請專利範圍修正本 民國86年1月修正 1 .—種不氧化予以加熱方法,其特徴爲,在以高溫 不氧化性氣體加熱不氧化氛圔爲必要之爐內時,交互變換 多台蓄熱式加熱器,同時重覆使不氧化性氣體加熱至規定 溫度之操作,連績供給所得到之髙溫不氧化性氣體者。 2. 如申請專利範圏第1項之不氧化予以加熱方法, 其中,使供給於前述爐內之高溫不氧化性氣體之一部份再 循環,而再使用於爐內之加熱者。 3. 如申請專利範圍第1或2項之不氧化予以加熱方 法,其中,供給於前述爐內之髙溫不氧化性氣體,係藉由 透過前述蓄熱式加熱器而進行之與爐內燃燒氣體的熱交換 而產生者。 4. 如申請專利範圍第1或2項之不氧化予以加熱方 法,其中,前述不氧化氛圔爲必要之爐爲餵槽。 經濟部中央標窣局負工消費合作社印袈 (請先閲讀背面之注意事項再填寫本頁) 5. 如申請專利範圍第4項之不氧化予以加熱方法, 其中,在再使用內壁產生殘餘鋼之前述餵槽時,以該餵槽 之外部加熱裝置,使用加熱至至少8 5 0 °C以上之不氧化 性氣體,使餵槽內保熱,並供下次使用》 6. 如申請專利範圍第1或2項之不氣化予以加熱方 法,其中,前述不氧化氛園爲必要之爐爲網材之加熱爐。 7. 如申請專利範團第6項之不氧化予以加熱方法, 其中*在前述加熱爐內之鋼材周圍,供給預熱至加熱中之 本紙張尺度適用中國國家標準(CNS ) A4规格(210X297公釐) 六、申請專利範圍 鋼材溫度以上或與爐溫大略相等溫度之高溫不氧化性氣體 8. 如申請專利範圍第7項之不氧化予以加熱方法, 其中,對前述加熱爐內之高溫不氧化性氣體之供給,在鋼 材表面溫度超過7 0 0 °C之加熱帶或均熱帶中,可使用包 圍鋼材之方式吹入該鋼材近傍,或利用該吹入與爐內氧化 性氣體置換之任一種方法。 9. 如申請專利範圍第1或2項之不氧化予以加熱方 法,其中,前述不氧化氛圔爲必要之爐爲退火爐。 1 0 .如申請專利範圍第1、2、5、7、8項中任 一項之不氧化予以加熱方法,其中,添加爆發界限以下之 微置還原性氣體於前述不氧化性氣體,並導入爐內,使爐 內氛困成爲不氧化或還原氛圔。 1 1 .如申請專利範圔第1 0項之不氧化予以加熱方 法,其中,單獨或混合N2,A r作爲前述不氧化性氣體 使用,單獨或混合H2,C0作爲前述還原性氣體使用者 〇 經濟部中央橾準局負工消费合作社印裂 (請先閱讀背面之注意事項再填寫本頁) 1 2 .—種不氧化予以加熱裝置,其爲對供給不氧化 氛圍爲必要之爐內不氧化性氣體予以加熱之蓄熱式不氧化 予以加熱裝置,其特徵爲具備:具有蓄熱體及其加熱裝置 之同時,至少以二台爲一組之熱交換器;及連接該熱交換 器及未加熱不氧化性氣體供給管線之變換閥,使前述熱交 換器之一台爲加熱菴熱體之蓄熱系統,另一台爲加熱不氧 化性氣體並予送風之送風系統,使兩系統以前述變換閥變 本紙張尺度速用申國國家標準(CNS〉A4规格(210X297公釐) -2 - 經濟部中央標準局貞工消賢合作社印装 A8 B8 C8 D8 六、申請專利範圍 換,並以熱交換使高溫不氧化性氣體連績產生者。 1 3 .如申請專利範圍第1 2項之不氧化予以加熱裝 β,其中,在前述蓄熱式不氧化加熱裝置,具有:併設氣 髏循環用風扇,其吸引側與埴內連接,同時排出側與前述 未加熱不氧化性氣體供給管線連接之加熱氣體之循環路徑 0 1 4 .如申請專利範園第1 2或1 3項之不氧化予以 加熱裝置,其中,前述蓄热體之加熱裝置爲氣體燃料燃燒 器,液體燃料燃燒器,電阻加熱器,誘導加熱體,等離子 炬之任一種。 1 5.如申請專利範圍第1 2或1 3項之不氧化予以 加熱裝置,其中,前述蓄熱體之加熱手段爲爐內燃燒氣體 0 1 6 .如申請專利範圍第1 2或1 3項之不氧化予以 加熱裝置,其中,添加爆發界限以下之微量還原性氣體於 前述不氧化性氣體使用。 1 7 .如申請專利範園第1 6項之不氧化予以加熱裝 置,其中,單獨或混合N2,A r作爲前述不氧化性氣體 使用,單獨或混合H2,C0作爲前述還原性氣體使用。 本紙張尺度適用中國國家揉準(CNS ) A4規格(210X297公釐) —I— ^^1 *_^i •丨(»ln 1^1 m ^^1 ^^1 I I i— —I— ^^1 ^^1 I --I all (請先閲讀背面之注意事項再填寫本頁)Sixth, the scope of patent application No. 84113251, the Chinese application, the amendment of the patent scope in January 1986, the amendment 1. A method of heating without oxidation, the special feature is that the high temperature non-oxidizing gas is not oxidizing atmosphere. When necessary in the furnace, multiple regenerative heaters are alternately changed, and the operation of heating the non-oxidizing gas to a prescribed temperature is repeated, and the obtained high-temperature non-oxidizing gas is continuously supplied. 2. A non-oxidizing heating method as described in Patent Application Section 1, wherein a part of the high-temperature non-oxidizing gas supplied to the furnace is recirculated and used again as the heater in the furnace. 3. The non-oxidizing heating method as claimed in item 1 or 2 of the patent scope, wherein the high temperature non-oxidizing gas supplied to the furnace is combined with the combustion gas in the furnace by passing through the regenerative heater Generated by the heat exchange. 4. The heating method as described in item 1 or 2 of the patent application scope is non-oxidation heating, in which the above-mentioned non-oxidizing atmosphere is a necessary furnace for feeding. Printed by the Central Standards Bureau of the Ministry of Economic Affairs, Negative Work Consumer Cooperative (please read the precautions on the back before filling in this page) For the aforementioned feeding trough of steel, use the external heating device of the feeding trough to use non-oxidizing gas heated to at least 850 ° C to keep the feeding trough warm and provide for the next use. 6. If applying for a patent The method for heating without gasification according to item 1 or 2 of the scope, wherein the furnace required for the non-oxidizing atmosphere is a heating furnace for mesh material. 7. The method of heating without oxidation as described in item 6 of the patent application group, where * the paper standard that is preheated to be heated around the steel in the aforementioned heating furnace is applied to the Chinese National Standard (CNS) A4 specification (210X297 %) 6. High-temperature non-oxidizing gas above the steel temperature of the patent application range or the temperature approximately equal to the furnace temperature 8. The heating method such as the non-oxidation of item 7 of the patent application range, in which the high temperature in the aforementioned heating furnace is not oxidized The supply of inert gas can be blown into the vicinity of the steel in a heating zone or even tropical zone where the surface temperature of the steel exceeds 700 ° C, or it can be replaced by any of the blowing and the oxidizing gas in the furnace. method. 9. The non-oxidizing heating method as claimed in item 1 or 2 of the patent scope, wherein the furnace in which the aforementioned non-oxidizing atmosphere is necessary is an annealing furnace. 1 0. The non-oxidizing heating method according to any one of items 1, 2, 5, 7 and 8 of the patent application scope, in which a slightly reducing gas below the explosion limit is added to the non-oxidizing gas and introduced In the furnace, the atmosphere in the furnace becomes non-oxidizing or reducing atmosphere. 1 1. The non-oxidizing heating method as claimed in Item 10 of the patent application, wherein N2 and Ar are used alone or mixed as the non-oxidizing gas, and H2 and C0 are used alone or as the reducing gas user. The Ministry of Economic Affairs, Central Bureau of Preparatory Work, Consumer Cooperative Cooperative Printed (Please read the precautions on the back and then fill out this page) 1 2.-A non-oxidizing heating device, which is necessary to supply a non-oxidizing atmosphere in the furnace. The regenerative non-oxidizing heating device heated by sexual gas is characterized by having at least two heat exchangers as a group while having a regenerator and its heating device; and connecting the heat exchanger and unheated The changeover valve of the oxidizing gas supply line makes one of the aforementioned heat exchangers a heat storage system that heats the heating body, and the other one is a supply air system that heats the non-oxidizing gas and supplies the air, so that the two systems change with the aforementioned changeover valve The speed of this paper is the national standard of CNS> A4 (210X297mm) -2-Printed and printed by the Zhenggong Xiaoxian Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs A8 B8 C8 D8 It can be used in a profitable range, and a high-temperature non-oxidizing gas can be continuously produced by heat exchange. 1 3. If the non-oxidation of the patent application item 12 is heated, β is included. Among the aforementioned regenerative non-oxidation heating devices, there are : Equipped with a fan for air circulation, the suction side is connected to the inside, and the discharge side is connected to the aforementioned unheated non-oxidizing gas supply line. The heating gas circulation path The heating device for non-oxidation in item 3, wherein the heating device for the regenerator is any one of gas fuel burner, liquid fuel burner, resistance heater, induction heater, and plasma torch. Item 1 2 or 13 The non-oxidizing heating device, wherein the heating means of the regenerator is combustion gas in the furnace 0 1 6. If the patent application item 12 or 13 non-oxidizing heating device, wherein , Add a small amount of reducing gas below the explosion limit to the aforementioned non-oxidizing gas for use. 1 7. If applying for a non-oxidizing heating device in accordance with item 16 of the patent scope, the single Or mix N2 and Ar as the aforementioned non-oxidizing gas, and use H2 and C0 alone or as the reducing gas. The paper size is applicable to China National Standard (CNS) A4 (210X297mm) —I — ^^ 1 * _ ^ i • 丨 (»ln 1 ^ 1 m ^^ 1 ^^ 1 II i— —I— ^^ 1 ^^ 1 I --I all (please read the notes on the back before filling this page)
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JP6300044A JP2991941B2 (en) 1994-12-02 1994-12-02 Non-oxidizing heating method in furnace
JP30004594A JP3394612B2 (en) 1994-12-02 1994-12-02 Non-oxidizing heat retention method for tundish
JP16620795A JPH0920919A (en) 1995-06-30 1995-06-30 Method for non-oxidize-heating steel material

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